#include <iostream>

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