Polycarp has spent the entire day preparing problems for you. Now he has to sleep for at least a minutes to feel refreshed.

Polycarp can only wake up by hearing the sound of his alarm. So he has just fallen asleep and his first alarm goes off in b minutes.

Every time Polycarp wakes up, he decides if he wants to sleep for some more time or not. If he's slept for less than a minutes in total, then he sets his alarm to go off in c minutes after it is reset and spends d minutes to fall asleep again. Otherwise, he gets out of his bed and proceeds with the day.

If the alarm goes off while Polycarp is falling asleep, then he resets his alarm to go off in another c minutes and tries to fall asleep for d minutes again.

You just want to find out when will Polycarp get out of his bed or report that it will never happen.

Please check out the notes for some explanations of the example.

Input

The first line contains one integer t (1 ≤ t ≤ 1000) — the number of testcases.

The only line of each testcase contains four integers a, b, c, d (1 ≤ a, b, c, d ≤ 10^9) — the time Polycarp has to sleep for to feel refreshed, the time before the first alarm goes off, the time before every succeeding alarm goes off and the time Polycarp spends to fall asleep.

Output

For each test case print one integer. If Polycarp never gets out of his bed then print -1. Otherwise, print the time it takes for Polycarp to get out of his bed.

Example

Input


7
10 3 6 4
11 3 6 4
5 9 4 10
6 5 2 3
1 1 1 1
3947465 47342 338129 123123
234123843 13 361451236 361451000


Output


27
27
9
-1
1
6471793
358578060125049

Note

In the first testcase Polycarp wakes up after 3 minutes. He only rested for 3 minutes out of 10 minutes he needed. So after that he sets his alarm to go off in 6 minutes and spends 4 minutes falling asleep. Thus, he rests for 2 more minutes, totaling in 3+2=5 minutes of sleep. Then he repeats the procedure three more times and ends up with 11 minutes of sleep. Finally, he gets out of his bed. He spent 3 minutes before the first alarm and then reset his alarm four times. The answer is 3+4 ⋅ 6 = 27.

The second example is almost like the first one but Polycarp needs 11 minutes of sleep instead of 10. However, that changes nothing because he gets 11 minutes with these alarm parameters anyway.

In the third testcase Polycarp wakes up rested enough after the first alarm. Thus, the answer is b=9.

In the fourth testcase Polycarp wakes up after 5 minutes. Unfortunately, he keeps resetting his alarm infinitely being unable to rest for even a single minute :(
import static java.lang.Math.max;
import static java.lang.Math.min;
import static java.lang.Math.abs;
import java.util.*;
import java.io.*;
import java.math.*;

/**
 *
 * @Har_Har_Mahadev
 */

/**
 * Main , Solution , Remove Public
 */
public class A {

	public static void process() throws IOException {

		long a = sc.nextLong(),b = sc.nextLong();
		long c = sc.nextLong(),d = sc.nextLong();
		if(a<=b) {
			System.out.println(b);
			return;
		}
		long diff = a-b;
		long have = c-d;
		if(have <= 0) {
			System.out.println(-1);
			return;
		}
		long ans = ceil(diff, have)*c;
		System.out.println(b+ans);
		

	}

	//=============================================================================
	//--------------------------The End---------------------------------
	//=============================================================================
	private static long INF = 2000000000000000000L, M = 1000000007, MM = 998244353;
	private static int N = 0;

	private static void google(int tt) {
		System.out.print("Case #" + (tt) + ": ");
	}

	static FastScanner sc;
	static FastWriter out;

	public static void main(String[] args) throws IOException {
		boolean oj = true;
		if (oj) {
			sc = new FastScanner();
			out = new FastWriter(System.out);
		} else {
			sc = new FastScanner("input.txt");
			out = new FastWriter("output.txt");
		}
		long s = System.currentTimeMillis();
		int t = 1;
		t = sc.nextInt();
		int TTT = 1;
		while (t-- > 0) {
			//			google(TTT++);
			process();
		}
		out.flush();
		//		tr(System.currentTimeMillis()-s+"ms");
	}

	private static boolean oj = System.getProperty("ONLINE_JUDGE") != null;

	private static void tr(Object... o) {
		if (!oj)
			System.err.println(Arrays.deepToString(o));
	}

	static class Pair implements Comparable<Pair> {
		int x, y;

		Pair(int x, int y) {
			this.x = x;
			this.y = y;
		}

		@Override
		public int compareTo(Pair o) {
			return Integer.compare(this.x, o.x);
		}

		/*
		 	@Override
		    public boolean equals(Object o) {
		        if (this == o) return true;
		        if (!(o instanceof Pair)) return false;
		        Pair key = (Pair) o;
		        return x == key.x && y == key.y;
		    }
		 
		    @Override
		    public int hashCode() {
		        int result = x;
		        result = 31 * result + y;
		        return result;
		    }
		*/
	}

	/////////////////////////////////////////////////////////////////////////////////////////////////////////

	static int ceil(int x, int y) {
		return (x % y == 0 ? x / y : (x / y + 1));
	}

	static long ceil(long x, long y) {
		return (x % y == 0 ? x / y : (x / y + 1));
	}

	static long sqrt(long z) {
		long sqz = (long) Math.sqrt(z);
		while (sqz * 1L * sqz < z) {
			sqz++;
		}
		while (sqz * 1L * sqz > z) {
			sqz--;
		}
		return sqz;
	}

	static int log2(int N) {
		int result = (int) (Math.log(N) / Math.log(2));
		return result;
	}

	public static long gcd(long a, long b) {
		if (a > b)
			a = (a + b) - (b = a);
		if (a == 0L)
			return b;
		return gcd(b % a, a);
	}

	public static long lcm(long a, long b) {
		return (a * b) / gcd(a, b);
	}

	public static int lower_bound(int[] arr, int x) {
		int low = 0, high = arr.length - 1, mid = -1;
		int ans = -1;
		while (low <= high) {
			mid = (low + high) / 2;

			if (arr[mid] > x) {
				high = mid - 1;
			} else {
				ans = mid;
				low = mid + 1;
			}
		}

		return ans;
	}

	public static int upper_bound(int[] arr, int x) {
		int low = 0, high = arr.length - 1, mid = -1;
		int ans = arr.length;
		while (low < high) {
			mid = (low + high) / 2;

			if (arr[mid] >= x) {
				ans = mid;
				high = mid - 1;
			} else {
				low = mid + 1;
			}
		}

		return ans;
	}

	static void ruffleSort(int[] a) {
		Random get = new Random();
		for (int i = 0; i < a.length; i++) {
			int r = get.nextInt(a.length);
			int temp = a[i];
			a[i] = a[r];
			a[r] = temp;
		}
		Arrays.sort(a);
	}

	static void ruffleSort(long[] a) {
		Random get = new Random();
		for (int i = 0; i < a.length; i++) {
			int r = get.nextInt(a.length);
			long temp = a[i];
			a[i] = a[r];
			a[r] = temp;
		}
		Arrays.sort(a);
	}

	static void reverseArray(int[] a) {
		int n = a.length;
		int arr[] = new int[n];
		for (int i = 0; i < n; i++)
			arr[i] = a[n - i - 1];
		for (int i = 0; i < n; i++)
			a[i] = arr[i];
	}

	static void reverseArray(long[] a) {
		int n = a.length;
		long arr[] = new long[n];
		for (int i = 0; i < n; i++)
			arr[i] = a[n - i - 1];
		for (int i = 0; i < n; i++)
			a[i] = arr[i];
	}

	//custom multiset (replace with HashMap if needed)
	public static void push(TreeMap<Integer, Integer> map, int k, int v) {
		//map[k] += v;
		if (!map.containsKey(k))
			map.put(k, v);
		else
			map.put(k, map.get(k) + v);
	}

	public static void pull(TreeMap<Integer, Integer> map, int k, int v) {
		//assumes map[k] >= v
		//map[k] -= v
		int lol = map.get(k);
		if (lol == v)
			map.remove(k);
		else
			map.put(k, lol - v);
	}

	// compress Big value to Time Limit
	public static int[] compress(int[] arr) {
		ArrayList<Integer> ls = new ArrayList<Integer>();
		for (int x : arr)
			ls.add(x);
		Collections.sort(ls);
		HashMap<Integer, Integer> map = new HashMap<Integer, Integer>();
		int boof = 1; //min value
		for (int x : ls)
			if (!map.containsKey(x))
				map.put(x, boof++);
		int[] brr = new int[arr.length];
		for (int i = 0; i < arr.length; i++)
			brr[i] = map.get(arr[i]);
		return brr;
	}

	// Fast Writer 

	public static class FastWriter {
		private static final int BUF_SIZE = 1 << 13;
		private final byte[] buf = new byte[BUF_SIZE];
		private final OutputStream out;
		private int ptr = 0;

		private FastWriter() {
			out = null;
		}

		public FastWriter(OutputStream os) {
			this.out = os;
		}

		public FastWriter(String path) {
			try {
				this.out = new FileOutputStream(path);
			} catch (FileNotFoundException e) {
				throw new RuntimeException("FastWriter");
			}
		}

		public FastWriter write(byte b) {
			buf[ptr++] = b;
			if (ptr == BUF_SIZE)
				innerflush();
			return this;
		}

		public FastWriter write(char c) {
			return write((byte) c);
		}

		public FastWriter write(char[] s) {
			for (char c : s) {
				buf[ptr++] = (byte) c;
				if (ptr == BUF_SIZE)
					innerflush();
			}
			return this;
		}

		public FastWriter write(String s) {
			s.chars().forEach(c -> {
				buf[ptr++] = (byte) c;
				if (ptr == BUF_SIZE)
					innerflush();
			});
			return this;
		}

		private static int countDigits(int l) {
			if (l >= 1000000000)
				return 10;
			if (l >= 100000000)
				return 9;
			if (l >= 10000000)
				return 8;
			if (l >= 1000000)
				return 7;
			if (l >= 100000)
				return 6;
			if (l >= 10000)
				return 5;
			if (l >= 1000)
				return 4;
			if (l >= 100)
				return 3;
			if (l >= 10)
				return 2;
			return 1;
		}

		public FastWriter write(int x) {
			if (x == Integer.MIN_VALUE) {
				return write((long) x);
			}
			if (ptr + 12 >= BUF_SIZE)
				innerflush();
			if (x < 0) {
				write((byte) '-');
				x = -x;
			}
			int d = countDigits(x);
			for (int i = ptr + d - 1; i >= ptr; i--) {
				buf[i] = (byte) ('0' + x % 10);
				x /= 10;
			}
			ptr += d;
			return this;
		}

		private static int countDigits(long l) {
			if (l >= 1000000000000000000L)
				return 19;
			if (l >= 100000000000000000L)
				return 18;
			if (l >= 10000000000000000L)
				return 17;
			if (l >= 1000000000000000L)
				return 16;
			if (l >= 100000000000000L)
				return 15;
			if (l >= 10000000000000L)
				return 14;
			if (l >= 1000000000000L)
				return 13;
			if (l >= 100000000000L)
				return 12;
			if (l >= 10000000000L)
				return 11;
			if (l >= 1000000000L)
				return 10;
			if (l >= 100000000L)
				return 9;
			if (l >= 10000000L)
				return 8;
			if (l >= 1000000L)
				return 7;
			if (l >= 100000L)
				return 6;
			if (l >= 10000L)
				return 5;
			if (l >= 1000L)
				return 4;
			if (l >= 100L)
				return 3;
			if (l >= 10L)
				return 2;
			return 1;
		}

		public FastWriter write(long x) {
			if (x == Long.MIN_VALUE) {
				return write("" + x);
			}
			if (ptr + 21 >= BUF_SIZE)
				innerflush();
			if (x < 0) {
				write((byte) '-');
				x = -x;
			}
			int d = countDigits(x);
			for (int i = ptr + d - 1; i >= ptr; i--) {
				buf[i] = (byte) ('0' + x % 10);
				x /= 10;
			}
			ptr += d;
			return this;
		}

		public FastWriter write(double x, int precision) {
			if (x < 0) {
				write('-');
				x = -x;
			}
			x += Math.pow(10, -precision) / 2;
			//		if(x < 0){ x = 0; }
			write((long) x).write(".");
			x -= (long) x;
			for (int i = 0; i < precision; i++) {
				x *= 10;
				write((char) ('0' + (int) x));
				x -= (int) x;
			}
			return this;
		}

		public FastWriter writeln(char c) {
			return write(c).writeln();
		}

		public FastWriter writeln(int x) {
			return write(x).writeln();
		}

		public FastWriter writeln(long x) {
			return write(x).writeln();
		}

		public FastWriter writeln(double x, int precision) {
			return write(x, precision).writeln();
		}

		public FastWriter write(int... xs) {
			boolean first = true;
			for (int x : xs) {
				if (!first)
					write(' ');
				first = false;
				write(x);
			}
			return this;
		}

		public FastWriter write(long... xs) {
			boolean first = true;
			for (long x : xs) {
				if (!first)
					write(' ');
				first = false;
				write(x);
			}
			return this;
		}

		public FastWriter writeln() {
			return write((byte) '\n');
		}

		public FastWriter writeln(int... xs) {
			return write(xs).writeln();
		}

		public FastWriter writeln(long... xs) {
			return write(xs).writeln();
		}

		public FastWriter writeln(char[] line) {
			return write(line).writeln();
		}

		public FastWriter writeln(char[]... map) {
			for (char[] line : map)
				write(line).writeln();
			return this;
		}

		public FastWriter writeln(String s) {
			return write(s).writeln();
		}

		private void innerflush() {
			try {
				out.write(buf, 0, ptr);
				ptr = 0;
			} catch (IOException e) {
				throw new RuntimeException("innerflush");
			}
		}

		public void flush() {
			innerflush();
			try {
				out.flush();
			} catch (IOException e) {
				throw new RuntimeException("flush");
			}
		}

		public FastWriter print(byte b) {
			return write(b);
		}

		public FastWriter print(char c) {
			return write(c);
		}

		public FastWriter print(char[] s) {
			return write(s);
		}

		public FastWriter print(String s) {
			return write(s);
		}

		public FastWriter print(int x) {
			return write(x);
		}

		public FastWriter print(long x) {
			return write(x);
		}

		public FastWriter print(double x, int precision) {
			return write(x, precision);
		}

		public FastWriter println(char c) {
			return writeln(c);
		}

		public FastWriter println(int x) {
			return writeln(x);
		}

		public FastWriter println(long x) {
			return writeln(x);
		}

		public FastWriter println(double x, int precision) {
			return writeln(x, precision);
		}

		public FastWriter print(int... xs) {
			return write(xs);
		}

		public FastWriter print(long... xs) {
			return write(xs);
		}

		public FastWriter println(int... xs) {
			return writeln(xs);
		}

		public FastWriter println(long... xs) {
			return writeln(xs);
		}

		public FastWriter println(char[] line) {
			return writeln(line);
		}

		public FastWriter println(char[]... map) {
			return writeln(map);
		}

		public FastWriter println(String s) {
			return writeln(s);
		}

		public FastWriter println() {
			return writeln();
		}
	}

	// Fast Inputs
	static class FastScanner {
		//I don't understand how this works lmao
		private int BS = 1 << 16;
		private char NC = (char) 0;
		private byte[] buf = new byte[BS];
		private int bId = 0, size = 0;
		private char c = NC;
		private double cnt = 1;
		private BufferedInputStream in;

		public FastScanner() {
			in = new BufferedInputStream(System.in, BS);
		}

		public FastScanner(String s) {
			try {
				in = new BufferedInputStream(new FileInputStream(new File(s)), BS);
			} catch (Exception e) {
				in = new BufferedInputStream(System.in, BS);
			}
		}

		private char getChar() {
			while (bId == size) {
				try {
					size = in.read(buf);
				} catch (Exception e) {
					return NC;
				}
				if (size == -1)
					return NC;
				bId = 0;
			}
			return (char) buf[bId++];
		}

		public int nextInt() {
			return (int) nextLong();
		}

		public int[] readArray(int N) {
			int[] res = new int[N];
			for (int i = 0; i < N; i++) {
				res[i] = (int) nextLong();
			}
			return res;
		}

		public long[] readArrayLong(int N) {
			long[] res = new long[N];
			for (int i = 0; i < N; i++) {
				res[i] = nextLong();
			}
			return res;
		}

		public int[][] readArrayMatrix(int N, int M, int Index) {
			if (Index == 0) {
				int[][] res = new int[N][M];
				for (int i = 0; i < N; i++) {
					for (int j = 0; j < M; j++)
						res[i][j] = (int) nextLong();
				}
				return res;
			}
			int[][] res = new int[N][M];
			for (int i = 1; i <= N; i++) {
				for (int j = 1; j <= M; j++)
					res[i][j] = (int) nextLong();
			}
			return res;

		}

		public long[][] readArrayMatrixLong(int N, int M, int Index) {
			if (Index == 0) {
				long[][] res = new long[N][M];
				for (int i = 0; i < N; i++) {
					for (int j = 0; j < M; j++)
						res[i][j] = nextLong();
				}
				return res;
			}
			long[][] res = new long[N][M];
			for (int i = 1; i <= N; i++) {
				for (int j = 1; j <= M; j++)
					res[i][j] = nextLong();
			}
			return res;

		}

		public long nextLong() {
			cnt = 1;
			boolean neg = false;
			if (c == NC)
				c = getChar();
			for (; (c < '0' || c > '9'); c = getChar()) {
				if (c == '-')
					neg = true;
			}
			long res = 0;
			for (; c >= '0' && c <= '9'; c = getChar()) {
				res = (res << 3) + (res << 1) + c - '0';
				cnt *= 10;
			}
			return neg ? -res : res;
		}

		public double nextDouble() {
			double cur = nextLong();
			return c != '.' ? cur : cur + nextLong() / cnt;
		}

		public double[] readArrayDouble(int N) {
			double[] res = new double[N];
			for (int i = 0; i < N; i++) {
				res[i] = nextDouble();
			}
			return res;
		}

		public String next() {
			StringBuilder res = new StringBuilder();
			while (c <= 32)
				c = getChar();
			while (c > 32) {
				res.append(c);
				c = getChar();
			}
			return res.toString();
		}

		public String nextLine() {
			StringBuilder res = new StringBuilder();
			while (c <= 32)
				c = getChar();
			while (c != '\n') {
				res.append(c);
				c = getChar();
			}
			return res.toString();
		}

		public boolean hasNext() {
			if (c > 32)
				return true;
			while (true) {
				c = getChar();
				if (c == NC)
					return false;
				else if (c > 32)
					return true;
			}
		}
	}

}
