func_code_string: #include <bits/stdc++.h>   using namespace std;   int i, j, n, k, tot, ans, sum;   int a[100005];   string st;   char ch;   int main() {     ios::sync_with_stdio(false);     cin >> n;     if (n == 2) {       cout << 3 << endl;       return 0;     }     if (n == 3) {       cout << 5 << endl;       return 0;     }     for (i = 1; i <= 100; i++) {       if (i % 2 == 0) continue;       j = (i * i + 1) / 2;       if (j >= n) break;     }     cout << i << endl;   }   