/*
入力 validation。WA なら OK。
*/

#include "testlib.h"
#include<bits/stdc++.h>
using namespace std;

using ll = long long;
const ll HWmin = 2, HWmax = 30000;
const ll Kmin = 1, Kmax = 30000;

int main(){
	registerValidation();
    ll H = inf.readLong(HWmin,HWmax);
    inf.readSpace();
    ll W = inf.readLong(HWmin,HWmax);
    inf.readSpace();
    ll K = inf.readLong(Kmin,Kmax);
    inf.readEoln();
    inf.readEof();
	return 0;
}