func_code_string: #include <bits/stdc++.h>   #pragma comment(linker,  /stack:100000000 )   using namespace std;   const int N = 200;   char s[N][N];   int main() {     int C;     cin >> C;     int n = 3;     while (n * (n - 1) * (n - 2) / 6 <= C) ++n;     int m = --n;     C -= n * (n - 1) * (n - 2) / 6;     vector<int> add;     while (C > 0) {       ++n;       for (int i = 2; i <= m; i++) {         if (i * (i - 1) / 2 > C) {           --i;           add.push_back(i);           C -= i * (i - 1) / 2;           break;         }       }     }     assert(n <= 100);     memset(s,  0 , sizeof(s));     for (int(i) = 0; (i) < (m); (i)++)       for (int(j) = 0; (j) < (i); (j)++) s[i][j] = s[j][i] =  1 ;     for (int i = m; i < n; i++) {       for (int(j) = 0; (j) < (add[i - m]); (j)++) {         s[i][j] = s[j][i] =  1 ;       }     }     printf( %d n , n);     for (int(i) = 0; (i) < (n); (i)++) {       s[i][n] = 0;       puts(s[i]);     }     return 0;   }   