Look for the Winner!

The citizens of TKB City are famous for their deep love in elections and vote counting. Today they hold an election for the next chairperson of the electoral commission. Now the voting has just been closed and the counting is going to start. The TKB citizens have strong desire to know the winner as early as possible during vote counting.

The election candidate receiving the most votes shall be the next chairperson. Suppose for instance that we have three candidates A, B, and C and ten votes. Suppose also that we have already counted six of the ten votes and the vote counts of A, B, and C are four, one, and one, respectively. At this moment, every candidate has a chance to receive four more votes and so everyone can still be the winner. However, if the next vote counted is cast for A, A is ensured to be the winner since A already has five votes and B or C can have at most four votes at the end. In this example, therefore, the TKB citizens can know the winner just when the seventh vote is counted.

Your mission is to write a program that receives every vote counted, one by one, identifies the winner, and determines when the winner gets ensured.

Input

The input consists of at most 1500 datasets, each consisting of two lines in the following format.

n
c1 c2 … cn


n in the first line represents the number of votes, and is a positive integer no greater than 100. The second line represents the n votes, separated by a space. Each ci (1 ≤ i ≤ n) is a single uppercase letter, i.e. one of 'A' through 'Z'. This represents the election candidate for which the i-th vote was cast. Counting shall be done in the given order from c1 to cn.

You should assume that at least two stand as candidates even when all the votes are cast for one candidate.

The end of the input is indicated by a line containing a zero.

Output

For each dataset, unless the election ends in a tie, output a single line containing an uppercase letter c and an integer d separated by a space: c should represent the election winner and d should represent after counting how many votes the winner is identified. Otherwise, that is, if the election ends in a tie, output a single line containing `TIE'.

Sample Input


1
A
4
A A B B
5
L M N L N
6
K K K K K K
6
X X X Y Z X
10
A A A B A C A C C B
10
U U U U U V V W W W
0


Output for the Sample Input


A 1
TIE
TIE
K 4
X 5
A 7
U 8






Example

Input

1
A
4
A A B B
5
L M N L N
6
K K K K K K
6
X X X Y Z X
10
A A A B A C A C C B
10
U U U U U V V W W W
0


Output

A 1
TIE
TIE
K 4
X 5
A 7
U 8
import java.io.IOException;
import java.io.PrintWriter;
import java.util.ArrayDeque;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.HashMap;
import java.util.HashSet;
import java.util.NoSuchElementException;
import java.util.Objects;
import java.util.PriorityQueue;
import java.util.Random;
import java.util.TreeMap;
import java.util.TreeSet;
import java.util.function.BiFunction;

public class Main{
	
	static FastScanner sc = new FastScanner();
	static Mathplus mp = new Mathplus();
	static PrintWriter ot = new PrintWriter(System.out);
	static Random rand = new Random();
	static int mod = 1000000007;
	
	public static void main(String[] args){
		
		while(true){
			int n = sc.nextInt();
			if(n==0)return;
			int[] C = new int[26];
			String[] S = new String[n];
			for(int i=0;i<n;i++){
				S[i] = sc.next();
			}
			boolean b = false;
			for(int i=0;i<n;i++){
				
				char c = S[i].charAt(0);
				C[c-'A']++;
				int rem = n-i-1;
				int max = 0;
				int sec = 0;
				char maxdex = '.';

				for(int j=0;j<26;j++){
					if(C[j]>max){
						sec = max;
						max = C[j];
						maxdex = (char) ('A' + j);
					}else if(C[j]>sec){
						sec = C[j];
					}
				}
				if(max>sec+rem){
					System.out.println(maxdex + " " + (i+1));
					b = true;
					break;
				}
				
				
			}
			if(!b)System.out.println("TIE");
			
		}
			
	}
	
	
	
	
	
	
}

class Trie{
	int nodenumber = 1;
	ArrayList<TrieNode> l;
	Trie(){
		l = new ArrayList<TrieNode>();
		l.add(new TrieNode());
	}
	
	void add(String S,int W){
		int now = 0;
		for(int i=0;i<S.length();i++) {
			TrieNode n = l.get(now);
			char c = S.charAt(i);
			if(n.Exist[c-'a']!=-1) {
				now = n.Exist[c-'a'];
			}else {
				l.add(new TrieNode());
				n.Exist[c-'a'] = nodenumber;
				now = nodenumber;
				nodenumber++;
			}
		}
		l.get(now).weight = W;
	}
	
	void find(String S,int i,int[] dp) {
		int now = 0;
		dp[i+1] = Math.max(dp[i],dp[i+1]);
		for(int j=0;;j++) {
			TrieNode n = l.get(now);
			dp[i+j] = Math.max(dp[i+j],dp[i]+n.weight);
			int slook = i+j;
			if(slook>=S.length())return;
			char c = S.charAt(slook);
			if(n.Exist[c-'a']==-1)return;
			now = n.Exist[c-'a'];
		}
	}
}

class TrieNode{
	
	int[] Exist = new int[26];
	int weight = 0;
	TrieNode(){
		for(int i=0;i<26;i++) {
			Exist[i] = -1;
		}
	}
}

class SizeComparator implements Comparator<Edge>{
	int[] size;
	SizeComparator(int[] s) {
		size = s;
	}
 
	public int compare(Edge o1, Edge o2) {
		return size[o1.to]-size[o2.to];
		
	}
 
}

class ConvexHullTrick {
	long[] A, B;
	int len;

	public ConvexHullTrick(int n) {
		A = new long[n];
		B = new long[n];
	}

	private boolean check(long a, long b) {
		return (B[len - 2] - B[len - 1]) * (a - A[len - 1]) >= (B[len - 1] - b) * (A[len - 1] - A[len - 2]);
	}

	public void add(long a, long b) {
		while (len >= 2 && check(a, b)) {
			len--;
		}
		A[len] = a;
		B[len] = b;
		len++;
	}

	public long query(long x) {
		int l = -1, r = len - 1;
		while (r - l > 1) {
			int mid = (r + l) / 2;
			if (get(mid, x) >= get(mid + 1, x)) {
				l = mid;
			} else {
				r = mid;
			}
		}
		return get(r, x);
	}

	private long get(int k, long x) {
		return A[k] * x + B[k];
	}
}

class Range{
	int l;
	int r;
	int length;
	Range(int L,int R){
		l = L;
		r = R;
		length = R-L+1;
	}
	
	boolean isIn(int x) {
		return (l<=x&&x<=r);
	
	}
}
class LeftComparator implements Comparator<Range>{
	public int compare(Range P, Range Q) {
		return P.l-Q.l;
	}
}
class RightComparator implements Comparator<Range>{
	public int compare(Range P, Range Q) {
		return P.r-Q.r;
	}
}
class LengthComparator implements Comparator<Range>{
	public int compare(Range P, Range Q) {
		return P.length-Q.length;
	}
}
class SegmentTree<T,E>{
	int N;
	BiFunction<T,T,T> f;
	BiFunction<T,E,T> g;
	T d1;
	ArrayList<T> dat;
	SegmentTree(BiFunction<T,T,T> F,BiFunction<T,E,T> G,T D1,T[] v){
		int n = v.length;
		f = F;
		g = G;
		d1 = D1;
		init(n);
		build(v);
	}
	

	void init(int n) {
		N = 1;
		while(N<n)N*=2;
		dat = new ArrayList<T>();
	}
	
	void build(T[] v) {
		for(int i=0;i<2*N;i++) {
			dat.add(d1);
		}
		for(int i=0;i<v.length;i++) {
			dat.set(N+i-1,v[i]);
		}
		for(int i=N-2;i>=0;i--) {
			dat.set(i,f.apply(dat.get(i*2+1),dat.get(i*2+2)));
		}
	}
	
	void update(int k,E a) {
		k += N-1;
		dat.set(k,g.apply(dat.get(k),a));
		while(k>0){
			k = (k-1)/2;
			dat.set(k,f.apply(dat.get(k*2+1),dat.get(k*2+2)));
		}
	}
	
	T query(int a,int b, int k, int l ,int r) {
		if(r<=a||b<=l) return d1;
		if(a<=l&&r<=b) return dat.get(k);
		T vl = query(a,b,k*2+1,l,(l+r)/2);
		T vr = query(a,b,k*2+2,(l+r)/2,r);
		return f.apply(vl, vr);
	}
	T query(int a,int b){
		return query(a,b,0,0,N);
	}
	
}
	
class LazySegmentTree<T,E> extends SegmentTree<T,E>{
	BiFunction<E,E,E> h;
	BiFunction<E,Integer,E> p = (E a,Integer b) ->{return a;};
	E d0;
	ArrayList<E> laz;
	LazySegmentTree(BiFunction<T,T,T> F,BiFunction<T,E,T> G,BiFunction<E,E,E> H,T D1,E D0,T[] v){
		super(F,G,D1,v);
		int n = v.length;
		h = H;
		d0 = D0;
		Init(n);
	}
	void build() {
		
	}
	void Init(int n){
		laz = new ArrayList<E>();
		for(int i=0;i<2*N;i++) {
			laz.add(d0);
		}
	}
	
	void eval(int len,int k) {
		if(laz.get(k).equals(d0)) return;
		if(k*2+1<N*2-1) {
			laz.set(k*2+1,h.apply(laz.get(k*2+1),laz.get(k)));
			laz.set(k*2+2,h.apply(laz.get(k*2+2),laz.get(k)));
		}
		dat.set(k,g.apply(dat.get(k), p.apply(laz.get(k), len)));
		laz.set(k,d0);
	}
	
	T update(int a,int b,E x,int k,int l,int r) {
		eval(r-l,k);
		if(r<=a||b<=l) {
			return dat.get(k);
		}
		if(a<=l&&r<=b) {
			laz.set(k,h.apply(laz.get(k),x));
			return g.apply(dat.get(k),p.apply(laz.get(k),r-l));
		}
		T vl = update(a,b,x,k*2+1,l,(l+r)/2);
		T vr = update(a,b,x,k*2+2,(l+r)/2,r);
		dat.set(k,f.apply(vl,vr));
		return dat.get(k);
		
	}
	
	T update(int a,int b,E x) {
		return update(a,b,x,0,0,N);
	}
	
	T query(int a,int b,int k,int l,int r) {
		eval(r-l,k);
		if(r<=a||b<=l) return d1;
		if(a<=l&&r<=b) return dat.get(k);
		
		T vl = query(a,b,k*2+1,l,(l+r)/2);
		T vr = query(a,b,k*2+2,(l+r)/2,r);
		return f.apply(vl, vr);
	}
	
	T query(int a,int b){
		return query(a,b,0,0,N);
	}
	
}

class BinaryIndexedTree{
	int[] val;
	BinaryIndexedTree(int N){
		val = new int[N+1];
	}
	long sum(int i) {
		long s = 0;
		while(i>0) {
			s += val[i];
			i -= i&(i-1);
		}
		return s;
	}
	void add(int x,int i) {
		while(i<val.length) {
			val[i] += x;
			i += i&(i-1);
		}
	}
}

class UnionFindTree {
	int[] root;
	int[] rank;
	int[] size;
	UnionFindTree(int N){
		root = new int[N];
		rank = new int[N];
		size = new int[N];
		for(int i=0;i<N;i++){
			root[i] = i;
			size[i] = 1;
		}
	}

	public int find(int x){
		if(root[x]==x){
			return x;
		}else{
			return find(root[x]);
		}
	}

	public void unite(int x,int y){
		x = find(x);
		y = find(y);
		if(x==y){
			return;
		}else{
			if(rank[x]<rank[y]){
				root[x] = y;
				size[y] += size[x];
			}else{
				root[y] = x;
				size[x] += size[y];
				if(rank[x]==rank[y]){
					rank[x]++;
				}
			}
		}
	}

	public boolean same(int x,int y){
		return find(x)==find(y);
	}
	
}

class ParticalEternalLastingUnionFindTree extends UnionFindTree{
	int[] time;
	int now;
	ParticalEternalLastingUnionFindTree(int N){
		super(N);
		time = new int[N];
		for(int i=0;i<N;i++) {
			time[i] = 1000000007;
		}
	}
	
	public int find(int t,int i) {
		if(time[i]>t) {
			return i;
		}else {
			return find(t,root[i]);
		}
	}
	
	public void unite(int x,int y,int t) {
		now = t;
		x = find(t,x);
		y = find(t,y);
		if(x==y)return;
		if(rank[x]<rank[y]){
			root[x] = y;
			size[y] += size[x];
			time[x] = t;
		}else{
			root[y] = x;
			size[x] += size[y];
			if(rank[x]==rank[y]){
				rank[x]++;
			}
			time[y] = t;
		}
	}
	
	public int sametime(int x,int y) {
		if(find(now,x)!=find(now,y)) return -1;
		int ok = now;
		int ng = 0;
		while(ok-ng>1) {
			int mid = (ok+ng)/2;
			if(find(mid,x)==find(mid,y)) {
				ok = mid;
			}else {
				ng = mid;
			}
		}
		return ok;
	}
	
	
}
class Graph {
	ArrayList<Edge>[] list;
	int size;
	TreeSet<LinkEdge> Edges = new TreeSet<LinkEdge>(new LinkEdgeComparator());
	
	@SuppressWarnings("unchecked")
	Graph(int N){
		size = N;
		list = new ArrayList[N];
		for(int i=0;i<N;i++){
			list[i] = new ArrayList<Edge>();
		}
	}
	
	
	


	void addEdge(int a,int b){
		list[a].add(new Edge(b,1));
	}

	void addWeightedEdge(int a,int b,long c){
		list[a].add(new Edge(b,c));
	}

	void addEgdes(int[] a,int[] b){
		int size = a.length;
		for(int i=0;i<size;i++){
			list[a[i]].add(new Edge(b[i],1));
		}
	}

	void addWeighterEdges(int[] a ,int[] b ,int[] c){
		int size = a.length;
		for(int i=0;i<size;i++){
			list[a[i]].add(new Edge(b[i],c[1]));
		}
	}

	long[] bfs(int s){
		long[] L = new long[size];
		for(int i=0;i<size;i++){
			L[i] = -1;
		}
		L[s] = 0;
		ArrayDeque<Integer> Q = new ArrayDeque<Integer>();
		Q.add(s);

		while(!Q.isEmpty()){
			int v = Q.poll();
			for(Edge e:list[v]){
				int w = e.to;
				long c = e.cost;
				if(L[w]==-1){
					L[w] = L[v] + c;
					Q.add(w);
				}
			}
		}
		return L;
	}
	int[] isTwoColor(){
		int[] L = new int[size];
		for(int i=0;i<size;i++){
			L[i] = -1;
		}
		L[0] = 0;
		ArrayDeque<Integer> Q = new ArrayDeque<Integer>();
		Q.add(0);

		while(!Q.isEmpty()){
			int v = Q.poll();
			for(Edge e:list[v]){
				int w = e.to;
				if(L[w]==-1){
					L[w] = 1-L[v];
					Q.add(w);
				}else{
					if(L[v]+L[w]!=1){
						L[0] = -2;
					}
				}
			}
		}
		return L;
	}
	long[] bfs2(int[] d,int s){
		long[] L = new long[size];
		for(int i=0;i<size;i++){
			L[i] = -1;
		}
		int pos = 0;
		L[s] = 0;
		d[s] = pos;
		pos++;
		ArrayDeque<Integer> Q = new ArrayDeque<Integer>();
		Q.add(s);

		while(!Q.isEmpty()){
			int v = Q.poll();
			for(Edge e:list[v]){
				int w = e.to;
				long c = e.cost;
				if(L[w]==-1){
					d[w] = pos;
					pos++;
					L[w] = L[v] + c;
					Q.add(w);
				}
			}
		}
		return L;
	}
	ArrayList<Graph> makeapart(){
		ArrayList<Graph> ans = new ArrayList<Graph>();
		boolean[] b = new boolean[size];
		int[] num = new int[size];
		for(int i=0;i<size;i++){
			if(b[i])continue;
			int sz = 0;
			ArrayList<Integer> l = new ArrayList<Integer>();
			ArrayDeque<Integer> Q = new ArrayDeque<Integer>();
			Q.add(i);
			b[i] = true;
			while(!Q.isEmpty()){
				int v = Q.poll();
				num[v] = sz;
				sz++;
				l.add(v);
				for(Edge e:list[v]){
					if(!b[e.to]){
						Q.add(e.to);
						b[e.to] = true;
					}
				}
			}
			Graph H = new Graph(sz);
			for(int e:l){
				for(Edge E:list[e]){
					H.addEdge(num[e],num[E.to]);
				}
			}
			ans.add(H);
			
		}
		return ans;
	}
	
	long[] dijkstra(int s){
		long[] L = new long[size];
		for(int i=0;i<size;i++){
			L[i] = -1;
		}
		int[] visited = new int[size];
		L[s] = 0;
		PriorityQueue<Pair> Q = new PriorityQueue<Pair>(new SampleComparator());
		Q.add(new Pair(0,s));

		while(!Q.isEmpty()){

			Pair C = Q.poll();
			if(visited[(int)C.b]==0){
				L[(int)C.b] = C.a;
				visited[(int) C.b] = 1;
				for(Edge D:list[(int) C.b]){
					Q.add(new Pair(L[(int)C.b]+D.cost,D.to));
				}
			}
		}

		return L;
	}
	long[] maxtra(int s){
		long[] L = new long[size];
		for(int i=0;i<size;i++){
			L[i] = -1;
		}
		int[] visited = new int[size];
		L[s] = -1;
	
		PriorityQueue<Pair> Q = new PriorityQueue<Pair>(new SampleComparator());
		Q.add(new Pair(0,s));

		while(!Q.isEmpty()){

			Pair C = Q.poll();
			if(visited[(int)C.b]==0){
				L[(int)C.b] = C.a;
				visited[(int) C.b] = 1;
				for(Edge D:list[(int) C.b]){
					Q.add(new Pair(Math.max(L[(int)C.b],D.cost),D.to));
				}
			}
		}

		return L;
	}
	long Kruskal(){
		long ans = 0;
		for(int i=0;i<size;i++) {
			for(Edge e:list[i]) {
				Edges.add(new LinkEdge(e.cost,i,e.to));
			}
		}
		UnionFindTree UF = new UnionFindTree(size);
		for(LinkEdge e:Edges){
			if(e.a>=0&&e.b>=0) {
				if(!UF.same(e.a,e.b)){
					ans += e.L;
					UF.unite(e.a,e.b);
				}
			}
		}

		return ans;
	}
	
	
	ArrayList<Integer> Kahntsort(){

		ArrayList<Integer> ans = new ArrayList<Integer>();
		PriorityQueue<Integer> q = new PriorityQueue<Integer>();
		int[] in = new int[size];
		for(int i=0;i<size;i++) {
			for(Edge e:list[i]) {
				in[e.to]++;
			}
		}
		for(int i=0;i<size;i++) {
			if(in[i]==0) {
				q.add(i);
			}
		}
		while(!q.isEmpty()) {
			int v = q.poll();
			ans.add(v);
			for(Edge e:list[v]) {
				in[e.to]--;
				if(in[e.to]==0) {
					q.add(e.to);
				}
			}
		}
		for(int i=0;i<size;i++) {
			if(in[i]>0)return new ArrayList<Integer>();
		}
		return ans;
	}
	
	RootedTree dfsTree(int i) {
		int[] used = new int[size];
		RootedTree r = new RootedTree(size);
		dfsTree(i,used,r);
		return r;
		
	}


	private void dfsTree(int i, int[] used, RootedTree r) {
		used[i] = 1;
		for(Edge e:list[i]) {
			if(used[e.to]==0) {
				r.list[i].add(e);
				used[e.to] = 1;
				dfsTree(e.to,used,r);
			}
		}
		
	}
}


class Tree extends Graph{
	
	public Tree(int N) {
		super(N);
	}
	
	long[] tyokkei(){
		long[] a = bfs(0);
		
		System.out.println();
		int maxdex = -1;
		long max = 0;
		for(int i=0;i<size;i++){
			if(max<a[i]){
				max = a[i];
				maxdex = i;
			}
		}
 
		long[] b = bfs(maxdex);
		System.out.println();
		int maxdex2 = -1;
		long max2 = 0;
		for(int i=0;i<size;i++){
			if(max2<b[i]){
				max2 = b[i];
				maxdex2 = i;
			}
		}
		long[] ans = {max2,maxdex,maxdex2};
		return ans;
	}
 
}

class RootedTree extends Graph{
	
	RootedTree(int N){
		super(N);
	}
	
}
class LinkEdge{
	long L;
	int a ;
	int b;
	LinkEdge(long l,int A,int B){
		L = l;
		a = A;
		b = B;
	}
	public boolean equals(Object o){
		LinkEdge O = (LinkEdge) o;
		if(O.a==this.a&&O.b==this.b&&O.L==this.L){
			return true;
		}else{
			return false;
		}


	}

	public int hashCode(){
		return Objects.hash(L,a,b);
	}

}

class Edge{
	int to;
	long cost;

	Edge(int a,long b){
		to = a;
		cost = b;
	}

}

class IndexedEdge extends Edge{
	int ind;
	IndexedEdge(int a,long b,int c){
		super(a,b);
		ind = c;
	}
}
class LinkEdgeComparator implements Comparator<LinkEdge>{
	public int compare(LinkEdge P, LinkEdge Q) {
		long temp = P.L-Q.L;
		if(temp==0){
			if(P.a>Q.a){
				return 1;
			}else{
				if(P.b>Q.b){
					return 1;
				}else{
					return -1;
				}
			}

		}
		if(temp>=0){
			return 1;
		}else{
			return -1;
		}
	}

}

class Triplet{
	long a;
	long b;
	long c;
	Triplet(long p,long q,long r){
		a = p;
		b = q;
		c = r;
	}
	public boolean equals(Object o){
		Triplet O = (Triplet) o;
		if(O.a==this.a&&O.b==this.b&&O.c==this.c){
			return true;
		}else{
			return false;
		}


	}

	public int hashCode(){
		return Objects.hash(a,b,c);
	}
	
}

class TripletComparator implements Comparator<Triplet>{
	public int compare(Triplet P, Triplet Q) {
		long temp = P.a-Q.a;
		if(temp==0){
			long ttemp = P.b-Q.b;
			if(ttemp==0) {
				if(P.c>Q.c) {
					return 1;
				}else if(P.c<Q.c){
					return -1;
				}else {
					return 0;
				}
			}
			if(ttemp>0) {
				return 1;
			}else {
				return -1;
			}

		}
		if(temp>=0){
			return 1;
		}else{
			return -1;
		}
	}

}
class Pair{
	long a;
	long b;

	Pair(long p,long q){
		this.a = p;
		this.b = q;
	}

	public boolean equals(Object o){
		Pair O = (Pair) o;
		if(O.a==this.a&&O.b==this.b){
			return true;
		}else{
			return false;
		}


	}

	public int hashCode(){
		return Objects.hash(a,b);
	}

}

class SampleComparator implements Comparator<Pair>{
	public int compare(Pair P, Pair Q) {
		long temp = P.a-Q.a;
		if(temp==0){
			if(P.b>Q.b){
				return 1;
			}else{
				return -1;
			}

		}
		if(temp>=0){
			return 1;
		}else{
			return -1;
		}
	}

}


class LongIntPair{
	long a;
	int b;

	LongIntPair(long p,int q){
		this.a = p;
		this.b = q;
	}

	public boolean equals(Object o){
		Pair O = (Pair) o;
		if(O.a==this.a&&O.b==this.b){
			return true;
		}else{
			return false;
		}


	}

	public int hashCode(){
		return Objects.hash(a,b);
	}

}

class LongIntSampleComparator implements Comparator<LongIntPair>{
	public int compare(LongIntPair P, LongIntPair Q) {
		long temp = P.a-Q.a;
		if(temp==0){
			if(P.b>Q.b){
				return 1;
			}else{
				return -1;
			}

		}
		if(temp>=0){
			return 1;
		}else{
			return -1;
		}
	}

}


class IntIntPair{
	int a;
	int b;

	IntIntPair(int p,int q){
		this.a = p;
		this.b = q;
	}

	public boolean equals(Object o){
		Pair O = (Pair) o;
		if(O.a==this.a&&O.b==this.b){
			return true;
		}else{
			return false;
		}


	}

	public int hashCode(){
		return Objects.hash(a,b);
	}

}

class IntIntSampleComparator implements Comparator<IntIntPair>{
	public int compare(IntIntPair P, IntIntPair Q) {
		int temp = P.a-Q.a;
		if(temp==0){
			return P.b-Q.b;

		}
		return temp;
	}

}


class FastScanner {
    private final java.io.InputStream in = System.in;
    private final byte[] buffer = new byte[1024];
    private int ptr = 0;
    private int buflen = 0;
    private boolean hasNextByte() {
        if (ptr < buflen) {
            return true;
        }else{
            ptr = 0;
            try {
                buflen = in.read(buffer);
            } catch (IOException e) {
                e.printStackTrace();
            }
            if (buflen <= 0) {
                return false;
            }
        }
        return true;
    }
    private int readByte() { if (hasNextByte()) return buffer[ptr++]; else return -1;}
    private static boolean isPrintableChar(int c) { return 33 <= c && c <= 126;}
    private void skipUnprintable() { while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++;}
    public boolean hasNext() { skipUnprintable(); return hasNextByte();}
    public String next() {
        if (!hasNext()) throw new NoSuchElementException();
        StringBuilder sb = new StringBuilder();
        int b = readByte();
        while(isPrintableChar(b)) {
            sb.appendCodePoint(b);
            b = readByte();
        }
        return sb.toString();
    }
    
    public long nextLong() {
        if (!hasNext()) throw new NoSuchElementException();
        long n = 0;
        boolean minus = false;
        int b = readByte();
        if (b == '-') {
            minus = true;
            b = readByte();
        }
        if (b < '0' || '9' < b) {
            throw new NumberFormatException();
        }
        while(true){
            if ('0' <= b && b <= '9') {
                n *= 10;
                n += b - '0';
            }else if(b == -1 || !isPrintableChar(b)){
                return (minus ? -n : n);
            }else{
                throw new NumberFormatException();
            }
            b = readByte();
        }
    }
    public int nextInt() {
        if (!hasNext()) throw new NoSuchElementException();
        long n = 0;
        boolean minus = false;
        int b = readByte();
        if (b == '-') {
            minus = true;
            b = readByte();
        }
        if (b < '0' || '9' < b) {
            throw new NumberFormatException();
        }
        while(true){
            if ('0' <= b && b <= '9') {
                n *= 10;
                n += b - '0';
            }else if(b == -1 || !isPrintableChar(b)){
                return (int) (minus ? -n : n);
            }else{
                throw new NumberFormatException();
            }
            b = readByte();
        }
    }
}


class Mathplus{
	int mod = 1000000007;
	long[] fac;
	long[][] comb;
	long[] pow;
	boolean isBuild = false;
	boolean isBuildc = false;
	boolean isBuildp = false;
	int mindex = -1;
	int maxdex = -1;


	void buildFac(){
		fac = new long[1000003];
		fac[0] = 1;
		for(int i=1;i<=1000002;i++){
			fac[i] = (fac[i-1] * i)%mod;
		}
		isBuild = true;
	}
	
	
	
	


	public long sigma(long i) {
		return i*(i+1)/2;
	}
	
	public int digit(long i) {
		int ans = 1;
		while(i>=10) {
			i /= 10;
			ans++;
		}
		return ans;
		
	}
	public int popcount(int i) {
		int ans = 0;
		while(i>0) {
			ans += i%2;
			i /= 2;
		}
		return ans;
	}

	public boolean contains(int S,int i) {
		return (S>>i&1)==1;
	}
	
	public int bitremove(int S,int i) {
		return S-(1<<i);
	}
	
	public int bitadd(int S,int i) {
		return S+(1<<i);
	}
	
	public boolean isSubSet(int S,int T) {
		return (S-T)==(S^T);
	}
	
	public boolean isDisjoint(int S,int T) {
		return (S+T)==(S^T);
	}
	
	public int isBigger(int[] d, int i) {
		int ok = d.length;
		int ng = -1;
		while(Math.abs(ok-ng)>1) {
			int mid = (ok+ng)/2;
			if(d[mid]>i) {
				ok = mid;
			}else {
				ng = mid;
			}
		}
		return ok;
	}
	
	public int isSmaller(int[] d, int i) {
		int ok = -1;
		int ng = d.length;
		while(Math.abs(ok-ng)>1) {
			int mid = (ok+ng)/2;
			if(d[mid]<i) {
				ok = mid;
			}else {
				ng = mid;
			}
		}
		return ok;
	}

	public HashSet<Integer> primetable(int m) {
		HashSet<Integer> pt = new HashSet<Integer>();
		for(int i=2;i<=m;i++) {
			boolean b = true;
			for(int d:pt) {
				if(i%d==0) {
					b = false;
					break;
				}
			}
			if(b) {
				pt.add(i);
			}
		}
		return pt;
	}
	
	public HashMap<Integer,Integer> hipPush(ArrayList<Integer> l){
		HashMap<Integer,Integer> ret = new HashMap<Integer,Integer>();
		TreeSet<Integer> s = new TreeSet<Integer>();
		for(int e:l) {
			s.add(e);
		}
		int pos = 0;
		for(int e:s) {
			ret.put(e,pos);
			pos++;
		}
		return ret;
	}
	public TreeMap<Integer,Integer> thipPush(ArrayList<Integer> l){
		TreeMap<Integer,Integer> ret = new TreeMap<Integer,Integer>();
		TreeSet<Integer> s = new TreeSet<Integer>();
		Collections.sort(l);
		int bef = -(mod+9393);
		int pos = 0;
		for(int e:l) {
			if(bef!=e) {
				ret.put(e,pos);
				pos++;
			}
			bef=e;
		}
		return ret;
	}
	
	long max(long[] a){
		long max = 0;
		for(int i=0;i<a.length;i++){
			if(max<a[i]){
				max =a[i];
				maxdex = i;
			}
		}
		return max;
	}
	int max(int[] a){
		int max = 0;
		for(int i=0;i<a.length;i++){
			if(max<a[i]){
				max =a[i];
				maxdex = i;
			}
		}
		return max;
	}
	long min(long[] a){
		long min = Long.MAX_VALUE;
		for(int i=0;i<a.length;i++){
			if(min>a[i]){
				min =a[i];
				mindex = i;
			}
		}
		return min;
	}
	int min(int[] a){
		int min = Integer.MAX_VALUE;
		for(int i=0;i<a.length;i++){
			if(min>a[i]){
				min =a[i];
				mindex = i;
			}
		}
		return min;
	}
	long sum(long[] a){
		long sum = 0;
		for(int i=0;i<a.length;i++){
			sum += a[i];
		}
		return sum;
	}
	long sum(int[] a){
		long sum = 0;
		for(int i=0;i<a.length;i++){
			sum += a[i];
		}
		return sum;
	}

	long gcd(long a, long b){
		if(a<b){
			a^=b;
			b^=a;
			a^=b;
		}
		if(a%b==0){
			return b;
		}else{
			return gcd(b,a%b);
		}
	}
	int igcd(int a, int b){
		
		if(a%b==0){
			return b;
		}else{
			return igcd(b,a%b);
		}
	}

	long lcm(long a, long b){
		return a / gcd(a,b) * b;
	}
	
	public long perm(int a,int num) {
		
		if(!isBuild) {
			buildFac();
		}
		return fac[a] * (rev(fac[a-num]))%mod;
	}
	
	void buildComb(int N) {
		comb = new long[N+1][N+1];
		comb[0][0] = 1;
		for(int i=1;i<=N;i++) {
			comb[i][0] = 1;
			for(int j=1;j<N;j++) {
				comb[i][j] = comb[i-1][j-1]+comb[i-1][j];
				if(comb[i][j]>mod)comb[i][j]-=mod;
			}
			comb[i][i] = 1;
		}
	}
	
	public long comb(int a,int num){
		
		if(!isBuild){
			buildFac();
		}
		return fac[a] * (rev(fac[num])*rev(fac[a-num])%mod)%mod;
	}
	
	long mulchoose(int n,int k) {
		return comb(n+k-1,k);
	}
	long rev(long l) {
		return pow(l,mod-2);
	}
	void buildpow(int l,int i) {
		pow = new long[i+1];
		pow[i] = 0;
		for(int j=1;j<=i;j++) {
			pow[j] = pow[j]*l;
			if(pow[j]>mod) {
				pow[j] %= mod;
			}
		}
	}
	long pow(long l, long i) {
		if(i==0){
			return 1;
		}else{
			if(i%2==0){
				long val = pow(l,i/2);
				return val * val % mod;
			}else{
				return pow(l,i-1) * l % mod;
			}
		}
	}
	


}

