func_code_string: #include <bits/stdc++.h>   using namespace std;   const int mod = 1051131;   const int Inv2 = (mod + 1) >> 1;   inline void setIO(string a) {}   long long Power;   int m, s, n, nn;   int a[(1 << 25) + 23];   void work(int n, int p, int q) {     if (n == 1) {       int &An = a[1];       (p += q) %= mod;       for (long long c = Power; c; c >>= 1, p = 1ll * p * p % mod)         if (c & 1) An = 1ll * An * p % mod;       return;     }     int t = n >> 1, tt = 1ll * t * p % mod;     int ttp = (p + q + mod - tt) % mod, tttp = 1;     for (long long c = Power; c; c >>= 1, ttp = 1ll * ttp * ttp % mod)       if (c & 1) tttp = 1ll * tttp * ttp % mod;     int xi = (1ll * t * p % mod - p + q + mod) % mod;     for (int i = (1); i <= (t); i++) {       int A = a[i], B = a[i + t];       a[i] = (A + B) % mod;       a[i + t] = (A + mod - B) % mod;       a[i + t] = 1ll * a[i + t] * tttp % mod;     }     work(n >> 1, (p + p) % mod, xi);     for (int i = (1); i <= (t); i++) {       int A = a[i], B = a[i + t];       a[i] = (A + B) % mod;       a[i + t] = (A + mod - B) % mod;       a[i] = 1ll * a[i] * Inv2 % mod;       a[i + t] = 1ll * a[i + t] * Inv2 % mod;     }   }   int main() {     scanf( %d , &m);     cin >> Power;     scanf( %d , &s);     for (int i = (1); i <= (s); i++) scanf( %d , &a[i]);     n = 1 << m;     nn = n;     for (int i = (s + 1); i <= (n); i++)       a[i] = (101ll * a[i - s] + 10007) % 1051131;     work(n, 1, 0);     int ans = 0;     for (int i = (1); i <= (n); i++) ans ^= a[i];     printf( %d n , ans);     return 0;   }   