#include <iostream>

using namespace std;
int main(void){
    long long A,B,C;
    scanf("%lld%lld%lld",&A,&B,&C);
        long long remain,block;
        block = A * C / (A + B - 1);
        remain  = C % block;
            if(A > remain)
            {
            cout << block + remain;
            }
            else
            {
            cout << block + A;
            }
}