#include <stdio.h>
int main (){
int n;
printf("Masukan angka (1-20): ");
for(int i = 1; i <= n; i++){
for(int u = 1; u <= n; u++){
}
}
return 0;
}
I2luY2x1ZGUgPHN0ZGlvLmg+CmludCBtYWluICgpewoJaW50IG47CglwcmludGYoIk1hc3VrYW4gYW5na2EgKDEtMjApOiAiKTsKCXNjYW5mKCIlZCIsJm4pOwoJCglmb3IoaW50IGkgPSAxOyBpIDw9IG47IGkrKyl7CgkJZm9yKGludCB1ID0gMTsgdSA8PSBuOyB1KyspewoJCQkJcHJpbnRmKCIoJWQsJWQpIixpLHUpOwoJCX0KCQoJCQlwcmludGYoIlxuIik7CgkJfQoJCgkKCQoJCglyZXR1cm4gMDsKfQ==