题解

#include <iostream>
using namespace std;

int main() {
    int a, b, n;
    cin >> a >> b >> n;

    int ans = 0;
    for (int ph = 0; ph <= n; ph++) {
        int m = (n - ph) * b - ph * a;
        if (m >= 0) {
            ans = max(ans, ph);
        }
    }

    cout << ans << endl;

    return 0;
}