等价串

题解：01 等价于 10，因为变换都是对称的，所以将a,b串划成最简形式，比较就行了。

#include<bits/stdc++.h>
#define ll long long
#define P pair<int,int>
#define pb push_back
#define lson root << 1
#define INF (int)2e9 + 7
#define maxn (int)1e4 + 7
#define rson root << 1 | 1
#define LINF (unsigned long long int)1e18
#define mem(arry, in) memset(arry, in, sizeof(arry))
using namespace std;

int T, n, m;
char a[105], b[105];

int main()
{
    cin >> T;
    while(T--){
        cin >> n >> m;
        scanf("%s", a);
        scanf("%s", b);
        
        int a0 = 0, a1  = 0;
        for(int i = 0; i < n; i++) {
            if(a[i] == '0') a0++;
            else a1++;
        }
        
        int b0 = 0, b1 = 0;
        for(int i = 0; i < m; i++) {
            if(b[i] == '0') b0++;
            else b1++;
        }
        
        a0 %= 3;
        a1 %= 3;
        b0 %= 3;
        b1 %= 3;
        
        a0 = (a0 + a1 * 2) % 3;
        b0 = (b0 + b1 * 2) % 3;
        if(a0 == b0) puts("YES");
        else puts("NO");
    }
    return 0;
}