#include <iostream>
using namespace std;

int main() {
    int a, b, c, x;
    cin >> a >> b >> c >> x;
    cout << "Clientul ";
    if (a == x) {
        cout << 1;
    } else if (b == x) {
        cout << 2;
    } else {
        cout << 3;
    }
    return 0;
}