#include <iostream>
#include <vector>
#include <string>
#include <cstring>
#include <math.h>
#include <cmath>
#include <limits.h>
#include <map>
#include <set>
#include <queue>
#include <algorithm>
#include <functional>
#include <stdio.h>
using namespace std;

long long MOD = 1000000007;

int main() {
    
    long long A,B,C;
    cin >> A >> B >> C;
    
    cout << ( A * ( C / (B+A-1) ) + ((C % (B+A-1)) <= A-1 ? (C % (B+A-1)) : A) ) << endl;
        
    
    
    return 0;
}