func_code_string: #include <bits/stdc++.h>   using namespace std;   const int N = 111;   const int LIMIT = 10000;   const double eps = 1e-6;   int a[N], b[N];   int n, m;   int isSq(long long t) {     long long tt = (long long)sqrt(t + eps);     return tt * tt == t;   }   void gen(int n, int a[]) {     bool flag = false;     while (!flag) {       long long total = 0;       for (int i = 1; i < n; i++) {         a[i] = rand() % LIMIT + 1;         total += 1LL * a[i] * a[i];       }       for (int i = 1; i <= LIMIT; i++) {         long long t = total + i * i;         a[n] = i;         if (isSq(t)) {           flag = true;           break;         }       }     }   }   int main() {     scanf( %d %d , &n, &m);     gen(n, a);     gen(m, b);     for (int i = 1; i <= n; i++) {       for (int j = 1; j <= m; j++) {         printf( %d%c , a[i] * b[j], j == m ?   n  :    );       }     }     return 0;   }   