Monocarp is playing a computer game. Now he wants to complete the first level of this game.

A level is a rectangular grid of 2 rows and n columns. Monocarp controls a character, which starts in cell (1, 1) — at the intersection of the 1-st row and the 1-st column.

Monocarp's character can move from one cell to another in one step if the cells are adjacent by side and/or corner. Formally, it is possible to move from cell (x_1, y_1) to cell (x_2, y_2) in one step if |x_1 - x_2| ≤ 1 and |y_1 - y_2| ≤ 1. Obviously, it is prohibited to go outside the grid.

There are traps in some cells. If Monocarp's character finds himself in such a cell, he dies, and the game ends.

To complete a level, Monocarp's character should reach cell (2, n) — at the intersection of row 2 and column n.

Help Monocarp determine if it is possible to complete the level.

Input

The first line contains a single integer t (1 ≤ t ≤ 100) — the number of test cases. Then the test cases follow. Each test case consists of three lines.

The first line contains a single integer n (3 ≤ n ≤ 100) — the number of columns.

The next two lines describe the level. The i-th of these lines describes the i-th line of the level — the line consists of the characters '0' and '1'. The character '0' corresponds to a safe cell, the character '1' corresponds to a trap cell.

Additional constraint on the input: cells (1, 1) and (2, n) are safe.

Output

For each test case, output YES if it is possible to complete the level, and NO otherwise.

Example

Input


4
3
000
000
4
0011
1100
4
0111
1110
6
010101
101010


Output


YES
YES
NO
YES

Note

Consider the example from the statement.

In the first test case, one of the possible paths is (1, 1) → (2, 2) → (2, 3).

In the second test case, one of the possible paths is (1, 1) → (1, 2) → (2, 3) → (2, 4).

In the fourth test case, one of the possible paths is (1, 1) → (2, 2) → (1, 3) → (2, 4) → (1, 5) → (2, 6).
1
9
000000010
000000000
 1
9
000000010
000100000
 1
60
000000000000000000000000000000000000000000000000000000000010
000000000000000000000000000000000000000000000000000000000010

YES
 YES
 NO

import com.sun.source.tree.Tree;
import org.w3c.dom.css.Rect;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.math.BigInteger;
import java.util.*;

import static java.lang.Math.*;

public class Main {

    //------------------------------------------CONSTANTS---------------------------------------------------------------
    public static final int MOD = (int) (1e9 + 7);

    //---------------------------------------------I/0------------------------------------------------------------------

    static class FastReader {
        BufferedReader br;
        StringTokenizer st;

        public FastReader()
        {
            br = new BufferedReader(
                    new InputStreamReader(System.in));
        }

        String next()
        {
            while (st == null || !st.hasMoreElements()) {
                try {
                    st = new StringTokenizer(br.readLine());
                }
                catch (IOException 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;
        }
    }

    public static void print(String s) {
        System.out.println(s);
    }

    public static void main(String[] args) {
        FastReader sc = new FastReader();

        int t = 1;
        t = sc.nextInt();

        for(int i = 0; i<t; i++) {
            System.out.println(solve(sc));
        }
    }

    //------------------------------------------------SOLVE-------------------------------------------------------------

    public static String solve(FastReader sc) {
        int n = sc.nextInt();
        char[][] grid = new char[2][n];
        for (int i = 0; i<2; i++) {
            grid[i] = sc.next().toCharArray();
        }

        for (int j = 1; j<n; j++) {
            if (grid[0][j] == '1' && grid[1][j] == '1') {
                return "NO";
            }
        }
        return "YES";
    }

    //-----------------------------------------------FUNCTIONS----------------------------------------------------------

    public static String printArray(int[] a) {
        StringBuilder r = new StringBuilder("");

        for(int i = 0; i<a.length; i++) {
            r.append(a[i] + " ");
        }
        return r.toString();
    }

    // first element that is not less than target
    public static int lowerBound(int[] arr, int begin, int end, int target) {
        while(begin < end) {
            int mid = begin + (end - begin) / 2;
            // When the element is less than the mid target
            if(arr[mid] < target)
                // begin to mid + 1, arr [begin] value is less than or equal target
                begin = mid + 1;
                // When the mid target element when greater than or equal
            else if(arr[mid] >= target)
                end = mid;
        }
        return begin;
    }

    // first element that is not less than target
    public static int lowerBound(List<Integer> arr, int begin, int end, int target) {
        while(begin < end) {
            int mid = begin + (end - begin) / 2;
            // When the element is less than the mid target
            if(arr.get(mid) < target)
                // begin to mid + 1, arr [begin] value is less than or equal target
                begin = mid + 1;
                // When the mid target element when greater than or equal
            else if(arr.get(mid) >= target)
                end = mid;
        }
        return begin;
    }

    // first element that is greater than target
    public static int upperBound(int[] arr, int begin, int end, int target) {
        while(begin < end) {
            int mid = begin + (end - begin) / 2;
            if(arr[mid] <= target)
                begin = mid + 1;
            else
                end = mid;
        }
        return begin;
    }

    // generate permutations (call search and access through permutations)
    public static class Permutations {
        List<List<Integer>> permutations = new ArrayList<>();
        List<Integer> permutation = new ArrayList<>();
        boolean[] taken;
        int[] a;

        public Permutations(int[] a) {
            this.a = a;
            taken = new boolean[a.length];
        }

        void search() {
            if (permutation.size()==a.length) {
                permutations.add(new ArrayList<>(permutation));
            } else {
                for (int i = 0; i<a.length; i++) {
                    if (taken[i]) {
                        continue;
                    }
                    taken[i] = true;
                    permutation.add(a[i]);
                    search();
                    taken[i] = false;
                    permutation.remove(permutation.size()-1);
                }
            }
        }
    }

    // generate subsets (call search and access subsets)
    public static class Subsets {
        List<List<Integer>> subsets = new ArrayList<>();
        List<Integer> subset = new ArrayList<>();

        void search(int[] a, int x) {
            if (x == a.length) {
                subsets.add(new ArrayList<>(subset));
            } else {
                subset.add(a[x]);
                search(a, x+1);
                subset.remove(subset.size() - 1);
                search(a, x+1);
            }
        }
    }

    public static int gcd(int a, int b) {
        while (b != 0) {
            int t = b;
            b = a % b;
            a = t;
        }
        return a;
    }

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

    public static int[] prefixSum(int[] a) {
        int n = a.length;
        int[] ps = new int[n];
        ps[0] = a[0];

        for (int i = 1; i<n; i++) {
            ps[i] = ps[i-1] + a[i];
        }

        return ps;
    }

    public static int[][] prefixSum2D(int[][] a) {
        int n = a.length;
        int m = a[0].length;
        int[][] ps = new int[n][m];
        ps[0][0] = a[0][0];

        for (int j = 1; j<m; j++) {
            ps[0][j] = ps[0][j-1] + a[0][j];
        }
        for (int i = 1; i<n; i++) {
            ps[i][0] = ps[i-1][0] + a[i][0];
        }

        for (int i = 1; i<n; i++) {
            for (int j = 1; j<m; j++) {
                ps[i][j] = ps[i-1][j] + ps[i][j-1] - ps[i-1][j-1] + a[i][j];
            }
        }

        return ps;
    }

    public static double log2(double a) {
        return log(a)/log(2);
    }

    //----------------------------------------DATA-STRUCTURES-----------------------------------------------------------

    // Range queries (i.e. RMQ) in O(1), others with functions in O(log n)
    public static class SparseTable {
        int[][] st;
        int n;
        int k;

        public SparseTable(int[] a) {
            n = a.length;
            k = (int) log2(n);
            st = new int[n][k+1];

            for (int i = 0; i<n; i++) {
                st[i][0] = a[i];
            }

            // 1<<j == 2^j
            for (int j = 1; j<=k; j++) {
                for (int i = 0; i + (1 << j) <= n; i++) {
                    st[i][j] = min(st[i][j-1], st[i + (1 << (j - 1))][j - 1]);
                }
            }
        }

        //not always available O(log n) -- change the constructor to use it
        public long sumQuery(int l, int r) {
            long sum = 0;
            for (int j = k; j>=0; j--) {
                if ((1 << j) <= r - l + 1) {
                    sum += st[l][j];
                    l += 1 << j;
                }
            }

            return sum;
        }

        //always available O(1) -- change this and the constructor for rangeMaxQuery
        public int rangeMinQuery(int l, int r) {
            int j = (int) log2(r - l + 1);
            int min = min(st[l][j], st[r - (1 << j) + 1][j]);
            return min;
        }

    }

    //Range Sum Dynamic Queries O(log n)
    public static class BinaryIndexedTree {

        int[] bit;

        public BinaryIndexedTree(int[] a) {
            int n = a.length;
            bit = new int[n+1];
            // Store the actual values in BITree[]
            // using update()
            for(int i = 0; i < n; i++)
                updateBit(i, a[i]);
        }

        // O(log n) update delta at index in the array (do it on the array and then call this function)
        public void updateBit(int index, int delta) {
            index += 1;

            while (index <= bit.length) {
                bit[index] += delta;

                index += index & (-index);
            }
        }

        // Computes sum a[0...index] in O(log n)
        public int getSum(int index) {
            int sum = 0;

            index += 1;

            while (index > 0) {
                sum += bit[index];

                index -= index & (-index);
            }

            return sum;
        }
    }

    public static class UnionFind {

        int[] link;
        int[] size;

        UnionFind(int n) {
            link = new int[n];
            size = new int[n];
            for (int i = 0; i<n; i++) {
                link[i] = i;
                size[i] = 1;
            }
        }

        int find(int x) {
            while (x != link[x]) x = link[x];
            return x;
        }

        boolean same(int a, int b) {
            return find(a) == find(b);
        }

        void unite(int a, int b) {
            a = find(a);
            b = find(b);

            if (size[a] < size[b]) {
                int temp = a;
                a = b;
                b = temp;
            }

            size[a] += size[b];
            link[b] = a;
        }
    }

    public static class SegmentTree {

        int st[];

        public SegmentTree(int arr[]) {
            int n = arr.length;

            int x = (int) (Math.ceil(log2(n)));

            int maxSize = 2 * (int) Math.pow(2, x) - 1;

            st = new int[maxSize];

            build(arr, 0, n-1, 0);
        }

        int build(int arr[], int ss, int se, int si) {
            if (ss == se) {
                st[si] = arr[ss];
                return arr[ss];
            }

            int mid = ss + (se - ss) / 2; //ss+se/2

            st[si] = build(arr, ss, mid, si * 2 + 1) +
                    build(arr, mid + 1, se, si * 2 + 2);
            return st[si];
        }

        private int getSumUtil(int ss, int se, int l, int r, int si) {
            if (l <= ss && r >= se) {
                return st[si];
            }

            if (se < l || ss > r) {
                return 0;
            }

            int mid = ss + (se - ss) / 2;
            return getSumUtil(ss, mid, l, r, 2 * si + 1) +
                    getSumUtil(mid + 1, se, l, r, 2 * si + 2);
        }

        void updateValueUtil(int ss, int se, int i, int diff, int si) {
            if (i < ss || i > se) {
                return;
            }

            st[si] = st[si] + diff;
            if (se != ss) {
                int mid = ss + (se - ss) / 2;
                updateValueUtil(ss, mid, i, diff, 2 * si + 1);
                updateValueUtil(mid + 1, se, i, diff, 2 * si + 2);
            }
        }

        int getSum(int n, int l, int r) {
            if (l < 0 || r > n - 1 || l > r) {
                return -1;
            }

            return getSumUtil(0, n-1, l, r, 0);
        }

        // don't do it directly on the array but use this function that will
        // do everything for you
        void updateValue(int arr[], int n, int i, int newValue) {
            if (i < 0 || i > n - 1) {
                return;
            }

            int diff = newValue - arr[i];

            arr[i] = newValue;

            updateValueUtil(0, n - 1, i, diff, 0);
        }
    }

    // Similar to Pair in c++, non-null objects as parameters
    public static class Pair<T extends Comparable<T>, Q extends Comparable<Q>> implements Comparable<Pair<T, Q>>{
        T a;
        Q b;

        public Pair(T a, Q 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 int compareTo(Pair<T, Q> tqPair) {
            int compareA = this.a.compareTo(tqPair.a);

            if (compareA == 0) {
                return this.b.compareTo(tqPair.b);
            } else {
                return compareA;
            }
        }
    }


}