#include <iostream>

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