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