#include "bits/stdc++.h"

#define rep(a,b) for(int a = 0;a < b;a++)
#define REP(i, x, n) for(int i = x; i < n; i++)
#define P(a) cout << a << endl
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
int dx[] = { 1, -1 , 0 , 0 };
int dy[] = { 0,  0,  1, -1 };
ll MOD = 1000000007;
unsigned long long str_to_int(std::string str) {
    unsigned long long ret;
    std::stringstream ss; ss << str;
    ss >> ret;
    return ret;
}

void solve(){
    ll a,b,c;
    cin >> a >> b >> c;
    ll d = a+b-1;
    ll e = c / d;
    ll ans = a*e+ min(a,c%d);
    cout << ans << endl;
}

int main() {
    solve();
    return 0;
}