func_code_string: #include <bits/stdc++.h>   using namespace std;   int32_t main() {     long long n, m;     cin >> n >> m;     vector<long long> a(n), b(m);     for (long long i = 0; i < n; ++i) cin >> a[i];     for (long long i = 0; i < m; ++i) cin >> b[i];     long long tot = 0;     for (long long i = 0; i < n; ++i) tot ^= a[i];     for (long long i = 0; i < m; ++i) tot ^= b[i];     if (tot == 0) {       cout <<  YES n ;       for (long long i = 0; i < n - 1; ++i) {         for (long long j = 0; j < m - 1; ++j) {           cout << 0 <<    ;         }         cout << a[i] <<   n ;       }       long long last = a[n - 1];       for (long long j = 0; j < m - 1; ++j) {         cout << b[j] <<    ;         last ^= b[j];       }       cout << last <<   n ;     } else {       cout <<  NO n ;     }     return 0;   }   