func_code_string: #include <bits/stdc++.h>   using namespace std;   long long total = 0;   struct c {     int can;     int tru;   };   int main() {     double a, b, c;     scanf( %lf%lf%lf , &a, &b, &c);     printf( %.100f n , a * (b) / (b + c));   }   