#include <iostream>
using namespace std;

int main() {
    int a = 0;
    int b = 0;
    int c = 0;
    int d = 1;
    int min = 0;

    cin >> a;
        if (a == 0) {
        cout << "Koniec";
        return 0;
        }
    cin >> b;
        if (b == 0) {
        cout << "Koniec";
        return 0;
        }
    cin >> c;
        if (c == 0) {
        cout << "Koniec";
        return 0;
        }

    cout << "a = " << a << endl;
    cout << "b = " << b << endl;
    cout << "c = " << c << endl;


    while (d != 0){
        cin >> d;

        if (a <= b) min = a;
        if (b < min) min = b;
        if (c < min) min = c;

        cout << "min w petli" << min << endl;

        if ((d > a && d > b && d > c) && (d != a && d != b && d != c)){
            if (min == a) a = d;
            if (min == b) b = d;
            if (min == c) c = d;
            }
        }

    cout << min << endl;

    return 0;
}