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

#define int long long  

signed main() {  
    ios::sync_with_stdio(false);
    cin.tie(nullptr);  

	int H, M, A;
	cin >> H >> M >> A;

	int x = H - 1, y = H * M;
	int len = lcm(x, y) / x;

	int cnt = y / len;

	if (2 * A != y) {
		int ans = cnt * (1 + (A / gcd(x, y)) + len - ((y - A - 1) / gcd(x, y) + 1));
		cout << ans << "\n";
	} else {
		int ans = cnt * (1 + (A / gcd(x, y)) + len - ((y - A - 1) / gcd(x, y) + 1));
		if (A % gcd(x, y) == 0) {
			ans -= cnt;
		}
		cout << ans << "\n";
		// assert(false);
	}

    return 0;
}