func_code_string: #include <bits/stdc++.h>   using namespace std;   int l, n, a[55], b[55], c[55], d[55];   int main() {     cin >> n >> l;     for (int i = 0; i < n; i++) cin >> a[i];     for (int i = 0; i < n; i++) cin >> b[i];     for (int i = 1; i < n; i++) c[i] = a[i] - a[i - 1];     c[0] = a[0] + l - a[n - 1];     for (int i = 1; i < n; i++) d[i] = b[i] - b[i - 1];     d[0] = b[0] + l - b[n - 1];     for (int i = 0; i < n; i++) {       bool f = 1;       for (int j = i; j < n; j++) {         if (c[j - i] != d[j]) f = 0;       }       for (int j = 0; j < i; j++) {         if (c[j + n - i] != d[j]) f = 0;       }       if (f) {         cout <<  YES n ;         return 0;       }     }     cout <<  NO n ;   }   