func_code_string: #include <bits/stdc++.h>   using namespace std;   template <typename T>   inline T Abs(const T& value) {     return value < 0 ? -value : value;   }   template <typename T>   inline T Sqr(const T& value) {     return value * value;   }   const int maxn = 110;   int a[maxn][maxn];   int main() {     int k;     int n = 0;     cin >> k;     while (k > 0) {       int d = 3;       while (((d + 1) * d * (d - 1)) / 6 <= k) {         ++d;       }       for (int i = n; i < n + d; ++i)         for (int j = i + 1; j < n + d; ++j) {           a[i][j] = 1;           a[j][i] = 1;         }       k -= ((d) * (d - 2) * (d - 1)) / 6;       int how = 2;       n += d;       while (true) {         how = 1;         while (((how + 1) * how) / 2 <= k) ++how;         if (how >= 2) {           k -= (how * (how - 1)) / 2;           for (int i = n - d; i < n && how > 0; ++i, --how) {             a[n][i] = 1;             a[i][n] = 1;           }           ++n;         } else           break;       }     }     cout << n << endl;     for (int i = 0; i < n; ++i) {       for (int j = 0; j < n; ++j) cout << a[i][j];       cout << endl;     }     return 0;   }   