851A - Arpa and a research in Mexican wave - CodeForces Solution

/**

 * code generated by JHelper

 * More info: https://github.com/AlexeyDmitriev/JHelper

 * @author yassin

 */



#include <bits/stdc++.h>



using namespace std;



class TaskA {

public:

    void solve(istream& in, ostream& out) {

        int n, k, t;

        in >> n >> k >> t;

        if (t <= k) {

            out << t << "\n";

        } else if (t <= n) {

            out << k << "\n";

        } else {

            out << (n + k) - t << "\n";

        }

    }

};



int main() {

	std::ios::sync_with_stdio(false); cin.tie(nullptr);

	TaskA solver;

	std::istream& in(std::cin);

	std::ostream& out(std::cout);

	solver.solve(in, out);

	return 0;

}