Vasya has an array a consisting of positive integer numbers. Vasya wants to divide this array into two non-empty consecutive parts (the prefix and the suffix) so that the sum of all elements in the first part equals to the sum of elements in the second part. It is not always possible, so Vasya will move some element before dividing the array (Vasya will erase some element and insert it into an arbitrary position).

Inserting an element in the same position he was erased from is also considered moving.

Can Vasya divide the array after choosing the right element to move and its new position?

Input

The first line contains single integer n (1 ≤ n ≤ 100000) — the size of the array.

The second line contains n integers a1, a2... an (1 ≤ ai ≤ 109) — the elements of the array.

Output

Print YES if Vasya can divide the array after moving one element. Otherwise print NO.

Examples

Input

3
1 3 2


Output

YES


Input

5
1 2 3 4 5


Output

NO


Input

5
2 2 3 4 5


Output

YES

Note

In the first example Vasya can move the second element to the end of the array.

In the second example no move can make the division possible.

In the third example Vasya can move the fourth element by one position to the left.


import java.io.*;
import java.net.URL;
import java.util.*;
import java.util.function.BinaryOperator;
import java.util.stream.Collectors;


public class Main {
    private final static long mod = 1000000007;

    private final static int MAXN = 1000001;

    private static long power(long x, long y, long m) {
        long temp;
        if (y == 0)
            return 1;
        temp = power(x, y / 2, m);
        temp = (temp * temp) % m;
        if (y % 2 == 0)
            return temp;
        else
            return ((x % m) * temp) % m;
    }

    private static long power(long x, long y) {
        return power(x, y, mod);
    }

    private static long gcd(long a, long b) {
        if (b == 0) return a;
        return gcd(b, a % b);
    }

    static int nextPowerOf2(int a) {
        return 1 << nextLog2(a);
    }

    static int nextLog2(int a) {
        return (a == 0 ? 0 : 32 - Integer.numberOfLeadingZeros(a - 1));
    }

    private static long modInverse(long a, long m) {
        long m0 = m;
        long y = 0, x = 1;
        if (m == 1)
            return 0;
        while (a > 1) {
            long q = a / m;
            long t = m;
            m = a % m;
            a = t;
            t = y;
            y = x - q * y;
            x = t;
        }
        if (x < 0)
            x += m0;
        return x;
    }

    private static int[] getLogArr(int n) {
        int arr[] = new int[n + 1];
        for (int i = 1; i < n + 1; i++) {
            arr[i] = (int) (Math.log(i) / Math.log(2) + 1e-10);
        }
        return arr;
    }

    private static int log[] = getLogArr(MAXN);

    private static int getLRSpt(int st[][], int L, int R, BinaryOperator<Integer> binaryOperator) {
        int j = log[R - L + 1];
        return binaryOperator.apply(st[L][j], st[R - (1 << j) + 1][j]);
    }

    private static int[][] getSparseTable(int array[], BinaryOperator<Integer> binaryOperator) {
        int k = log[array.length + 1] + 1;
        int st[][] = new int[array.length + 1][k + 1];

        for (int i = 0; i < array.length; i++)
            st[i][0] = array[i];

        for (int j = 1; j <= k; j++) {
            for (int i = 0; i + (1 << j) <= array.length; i++) {
                st[i][j] = binaryOperator.apply(st[i][j - 1], st[i + (1 << (j - 1))][j - 1]);
            }
        }
        return st;
    }

    static class Subset {
        int parent;
        int rank;

        @Override
        public String toString() {
            return "" + parent;
        }
    }

    static int find(Subset[] Subsets, int i) {
        if (Subsets[i].parent != i)
            Subsets[i].parent = find(Subsets, Subsets[i].parent);
        return Subsets[i].parent;
    }

    static void union(Subset[] Subsets, int x, int y) {
        int xroot = find(Subsets, x);
        int yroot = find(Subsets, y);

        if (Subsets[xroot].rank < Subsets[yroot].rank)
            Subsets[xroot].parent = yroot;
        else if (Subsets[yroot].rank < Subsets[xroot].rank)
            Subsets[yroot].parent = xroot;
        else {
            Subsets[xroot].parent = yroot;
            Subsets[yroot].rank++;
        }
    }


    private static int maxx(Integer... a) {
        return Collections.max(Arrays.asList(a));
    }

    private static int minn(Integer... a) {
        return Collections.min(Arrays.asList(a));
    }


    private static long maxx(Long... a) {
        return Collections.max(Arrays.asList(a));
    }

    private static long minn(Long... a) {
        return Collections.min(Arrays.asList(a));
    }

    private static class Pair<T extends Comparable<T>, U extends Comparable<U>> implements Comparable<Pair<T, U>> {
        T a;
        U b;

        public Pair(T a, U b) {
            this.a = a;
            this.b = b;
        }

        @Override
        public boolean equals(Object o) {
            if (this == o) return true;
            if (o == null || getClass() != o.getClass()) return false;
            Pair pair = (Pair) o;
            return a.equals(pair.a) &&
                    b.equals(pair.b);
        }

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

        @Override
        public String toString() {
            return "(" + a +
                    "," + b +
                    ')';
        }

        @Override
        public int compareTo(Pair<T, U> o) {
            return (this.a.equals(o.a) ? this.b.equals(o.b) ? 0 : this.b.compareTo(o.b) : this.a.compareTo(o.a));
        }
    }


    public static int upperBound(List<Integer> list, int value) {
        int low = 0;
        int high = list.size();
        while (low < high) {
            final int mid = (low + high) / 2;
            if (value >= list.get(mid)) {
                low = mid + 1;
            } else {
                high = mid;
            }
        }
        return low;
    }


    private static int[] getLPSArray(String pattern) {
        int i, j, n = pattern.length();
        int[] lps = new int[pattern.length()];
        lps[0] = 0;
        for (i = 1, j = 0; i < n; ) {
            if (pattern.charAt(i) == pattern.charAt(j)) {
                lps[i++] = ++j;
            } else if (j > 0) {
                j = lps[j - 1];
            } else {
                lps[i++] = 0;
            }
        }
        return lps;
    }

    private static List<Integer> findPattern(String text, String pattern) {
        List<Integer> matchedIndexes = new ArrayList<>();
        if (pattern.length() == 0) {
            return matchedIndexes;
        }
        int[] lps = getLPSArray(pattern);
        int i = 0, j = 0, n = text.length(), m = pattern.length();
        while (i < n) {
            if (text.charAt(i) == pattern.charAt(j)) {
                i++;
                j++;
            }
            if (j == m) {
                matchedIndexes.add(i - j);
                j = lps[j - 1];
            }
            if (i < n && text.charAt(i) != pattern.charAt(j)) {
                if (j > 0) {
                    j = lps[j - 1];
                } else {
                    i++;
                }
            }
        }
        return matchedIndexes;
    }

    private static Set<Long> getDivisors(long n) {
        Set<Long> divisors = new HashSet<>();
        for (long i = 2; i <= Math.sqrt(n); i++) {
            if (n % i == 0) {
                divisors.add(i);
                divisors.add(n / i);
            }
        }
        return divisors;
    }

    public boolean divisorGame(int N) {
        boolean dp[]=new boolean[N+1];
        dp[0]=true;
        for(int i=2;i<=N;i++){
            Set<Long> divs = getDivisors(i);
            for(long div:divs){
                dp[i]|=!dp[i-(int)div];
            }
        }
        return dp[N];
    }

    private static long getLCM(long a, long b) {
        return (Math.max(a, b) / gcd(a, b)) * Math.min(a, b);
    }

    static long fac[] = new long[2000005];
    static long ifac[] = new long[2000005];

    private static void preCompute(int n) {
        fac = new long[n + 1];
        ifac = new long[n + 1];
        fac[0] = ifac[0] = fac[1] = ifac[1] = 1;
        int i;
        for (i = 2; i < n + 1; i++) {
            fac[i] = (i * fac[i - 1]) % mod;
            ifac[i] = (power(i, mod - 2) * ifac[i - 1]) % mod;
        }
    }

    private static long C(int n, int r) {
        if (n < 0 || r < 0) return 1;
        if (r > n) return 1;
        return (fac[n] * ((ifac[r] * ifac[n - r]) % mod)) % mod;
    }

    static long getSum(long BITree[], int index) {
        long sum = 0;
        index = index + 1;
        while (index > 0) {
            sum += BITree[index];
            index -= index & (-index);
        }
        return sum;
    }

    public static void updateBIT(long BITree[], int index, long val) {
        index = index + 1;
        while (index <= BITree.length - 1) {
            BITree[index] += val;
            index += index & (-index);
        }
    }

    long[] constructBITree(int arr[], int m) {
        int n = arr.length;
        long BITree[] = new long[m + 1];
        for (int i = 1; i <= n; i++)
            BITree[i] = 0;
        for (int i = 0; i < n; i++)
            updateBIT(BITree, i, arr[i]);
        return BITree;
    }

    private static String getBinaryString(int a[], int l, int r){
        if(l>r||l>a.length-1||r>a.length-1||l<0||r<0)return "";
        StringBuilder sb = new StringBuilder();
        int i=l;
        while(i<=r&&a[i]==0)i++;
        for (;i<=r;i++){
            sb.append(a[i]);
        }
        return sb.toString();
    }
    private static int cmpBS(String a, String b){
        if(a.length()==b.length()){
            return a.compareTo(b);
        }
        else return a.length()-b.length();
    }

    public static int[] threeEqualParts(int[] A) {
        int ans[]=new int[2];
        ans[0]=ans[1]=-1;
        int lo1=0,hi1=A.length-3,mid1,curr;
        while (lo1<=hi1){
            mid1=lo1+(hi1-lo1)/2;
            int lo=mid1+1,hi=A.length-2,mid;
            String leftS=getBinaryString(A,0,mid1);
            String midS=getBinaryString(A,lo, hi);;
            String rightS="";
            while(lo<=hi){
                mid=lo+(hi-lo)/2;
                midS=getBinaryString(A,mid1+1, mid);
                rightS=getBinaryString(A,mid+1,A.length-1);
                if(midS.equals(rightS)&&leftS.equals(midS)){
                    ans[0]=mid1;
                    ans[1]=mid+1;
                    return ans;
                }
                else if(cmpBS(rightS,midS) < 0){
                    hi=mid-1;
                }
                else {
                    lo=mid+1;
                }
                //System.out.println(mid1+" "+lo+" "+hi);
            }
            if(cmpBS(leftS,midS) < 0) {
                hi1=mid1-1;
            }
            else {
                lo1=mid1+1;
            }
        }
        return ans;
    }

    private static int upperBound(int a[], int l, int r, int x) {
        if (l > r) return -1;
        if (l == r) {
            if (a[l] <= x) {
                return -1;
            } else {
                return a[l];
            }
        }
        int m = (l + r) / 2;
        if (a[m] <= x) {
            return upperBound(a, m + 1, r, x);
        } else {
            return upperBound(a, l, m, x);
        }
    }


    private static void mul(long A[][], long B[][]) {
        int i, j, k, n = A.length;
        long C[][] = new long[n][n];
        for (i = 0; i < n; i++) {
            for (j = 0; j < n; j++) {
                for (k = 0; k < n; k++) {
                    C[i][j] = (C[i][j] + (A[i][k] * B[k][j]) % mod) % mod;
                }
            }
        }
        for (i = 0; i < n; i++) {
            for (j = 0; j < n; j++) {
                A[i][j] = C[i][j];
            }
        }
    }

    private static void power(long A[][], long base[][], long n) {
        if (n < 2) {
            return;
        }
        power(A, base, n / 2);
        mul(A, A);
        if (n % 2 == 1) {
            mul(A, base);
        }
    }


    private static void print(int... a) {
        System.out.println(Arrays.toString(a));
    }



    static void reverse(Integer a[], int l, int r) {
        while (l < r) {
            int t = a[l];
            a[l] = a[r];
            a[r] = t;
            l++;
            r--;
        }
    }

    public void rotate(Integer[] nums, int k) {
        k = k % nums.length;
        reverse(nums, 0, nums.length - k - 1);
        reverse(nums, nums.length - k, nums.length - 1);
        reverse(nums, 0, nums.length - 1);
    }

    private static boolean isSorted(int a[]) {
        for (int i = 0; i < a.length - 1; i++) {
            if (a[i] > a[i + 1]) return false;
        }
        return true;
    }


    private static String reverse(String s) {
        if ("".equals(s)) return "";
        return reverse(s.substring(1)) + s.charAt(0);
    }

    private static boolean isPrime(int n) {
        if (n <= 1)
            return false;
        if (n <= 3)
            return true;
        if (n % 2 == 0 || n % 3 == 0)
            return false;
        for (int i = 5; i * i <= n; i = i + 6)
            if (n % i == 0 || n % (i + 2) == 0)
                return false;
        return true;
    }



    public static void main(String[] args) throws Exception {

        long START_TIME = System.currentTimeMillis();
        try (FastReader in = new FastReader();
             FastWriter out = new FastWriter()) {
            int n, t, i, j, f,  m, ti, tidx, gm, q, g, l=1, r=2,c;
            //for (t = in.nextInt(), tidx = 1; tidx <= t; tidx++)
            {
                long x = 0, y = 0, z = 0, sum = 0, bhc = 0, ans = 0,k,d;
                //out.print(String.format("Case #%d: ", tidx));
                n=in.nextInt();
                int a[]=in.nextIntArr(n);
                long csum[]=new long[n+1];
                for(i=0;i<n;i++){
                    csum[i+1]=csum[i]+a[i];
                }
                if(csum[n]%2==1){
                    out.println("NO");
                }
                else {
                    String res="NO";
                    Set<Long> set = new HashSet<>();
                    for (i = 0; i < n; i++) {
                        set.add((long)a[i]);
                        if(csum[i+1]==csum[n]/2||set.contains(csum[i+1]-csum[n]/2)){
                            res="YES";
                            break;
                        }
                    }
                    set = new HashSet<>();
                    for (i = n-1; i >=0; i--) {
                        set.add((long)a[i]);
                        if(csum[n]-csum[i]==csum[n]/2||set.contains(csum[n]/2-csum[i])){
                            res="YES";
                            break;
                        }
                    }
                    out.println(res);
                }
            }
            if (args.length > 0 && "ex_time".equals(args[0])) {
                out.print("\nTime taken: ");
                out.println(System.currentTimeMillis() - START_TIME);
            }
            out.commit();
        } catch (Exception e) {
            e.printStackTrace();
        }

    }


    public static class FastReader implements Closeable {
        private BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        private StringTokenizer st;

        String next() {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
            return st.nextToken();
        }

        int nextInt() {
            return Integer.parseInt(next());
        }

        long nextLong() {
            return Long.parseLong(next());
        }

        double nextDouble() {
            return Double.parseDouble(next());
        }

        String nextLine() {
            String str = "";
            try {
                str = br.readLine();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return str;
        }

        int[] nextIntArr(int n) {
            int[] arr = new int[n];
            for (int i = 0; i < n; i++) {
                arr[i] = nextInt();
            }
            return arr;
        }

        Integer[] nextIntegerArr(int n) {
            Integer[] arr = new Integer[n];
            for (int i = 0; i < n; i++) {
                arr[i] = nextInt();
            }
            return arr;
        }

        double[] nextDoubleArr(int n) {
            double[] arr = new double[n];
            for (int i = 0; i < n; i++) {
                arr[i] = nextDouble();
            }
            return arr;
        }

        long[] nextLongArr(int n) {
            long[] arr = new long[n];
            for (int i = 0; i < n; i++) {
                arr[i] = nextLong();
            }
            return arr;
        }

        List<Long> nextLongList(int n) {
            List<Long> retList = new ArrayList<>();
            for (int i = 0; i < n; i++) {
                retList.add(nextLong());
            }
            return retList;
        }

        String[] nextStrArr(int n) {
            String[] arr = new String[n];
            for (int i = 0; i < n; i++) {
                arr[i] = next();
            }
            return arr;
        }


        int[][] nextIntArr2(int n, int m) {
            int[][] arr = new int[n][m];
            for (int i = 0; i < n; i++) {
                arr[i] = nextIntArr(m);
            }
            return arr;
        }

        long[][] nextLongArr2(int n, int m) {
            long[][] arr = new long[n][m];
            for (int i = 0; i < n; i++) {
                arr[i] = nextLongArr(m);
            }
            return arr;
        }

        @Override
        public void close() throws IOException {
            br.close();
        }
    }


    public static class FastWriter implements Closeable {
        BufferedWriter bw;
        StringBuilder sb = new StringBuilder();
        List<String> list = new ArrayList<>();
        Set<String> set = new HashSet<>();

        public FastWriter() {
            bw = new BufferedWriter(new OutputStreamWriter(System.out));
        }

        <T> void commit() throws IOException {
            bw.write(sb.toString());
            bw.flush();
            sb = new StringBuilder();
        }

        public <T> void print(T obj) throws IOException {
            sb.append(obj.toString());
            commit();
        }

        public void println() throws IOException {
            print("\n");
        }

        public <T> void println(T obj) throws IOException {
            print(obj.toString() + "\n");
        }

        <T> void printArrLn(T[] arr) throws IOException {
            for (int i = 0; i < arr.length - 1; i++) {
                print(arr[i] + " ");
            }
            println(arr[arr.length - 1]);
        }

        <T> void printArr2(T[][] arr) throws IOException {
            for (int j = 0; j < arr.length; j++) {
                for (int i = 0; i < arr[j].length - 1; i++) {
                    print(arr[j][i] + " ");
                }
                println(arr[j][arr[j].length - 1]);
            }
        }

        <T> void printColl(Collection<T> coll) throws IOException {
            List<String> stringList = coll.stream().map(e -> ""+e).collect(Collectors.toList());
            println(String.format("%s",String.join(" ", stringList)));
        }

        void printCharN(char c, int n) throws IOException {
            for (int i = 0; i < n; i++) {
                print(c);
            }
        }

        void printIntArr2(int[][] arr) throws IOException {
            for (int j = 0; j < arr.length; j++) {
                for (int i = 0; i < arr[j].length - 1; i++) {
                    print(arr[j][i] + " ");
                }
                println(arr[j][arr[j].length - 1]);
            }
        }

        @Override
        public void close() throws IOException {
            bw.close();
        }

    }

}