func_code_string: #include <bits/stdc++.h>   using namespace std;   const double PI = acos(-1);   int main() {     ios_base::sync_with_stdio(0);     cin.tie(0);     cout.tie(0);     double n, R, r;     cin >> n >> R >> r;     if (r > R) return cout <<  NO , 0;     if (2 * r == R) {       if (n <= 2)         return cout <<  YES , 0;       else         return cout <<  NO , 0;     }     if (2 * r > R) {       if (n <= 1)         return cout <<  YES , 0;       else         return cout <<  NO , 0;     }     if (2 * r < R) {       double h = R - r;       double t = atan2(r, (double)sqrt(h * h - r * r));       if (t * n - PI > 0.0000000000000001)         cout <<  NO ;       else         cout <<  YES ;     }     return 0;   }   