#include <iostream>
using namespace std;
int main() {
for (int i = 0; i < 20;) {
std::cout << (i++ % 5) << "\n";
}
// your code goes here
return 0;
}
I2luY2x1ZGUgPGlvc3RyZWFtPgp1c2luZyBuYW1lc3BhY2Ugc3RkOwoKaW50IG1haW4oKSB7CgkKCWZvciAoaW50IGkgPSAwOyBpIDwgMjA7KSB7CgkJc3RkOjpjb3V0IDw8IChpKysgJSA1KSA8PCAiXG4iOwoJfQoJCgkvLyB5b3VyIGNvZGUgZ29lcyBoZXJlCglyZXR1cm4gMDsKfQ==