#include<bits/stdc++.h>
using namespace std;
int main(){
	printf("0\n");
}
// So difficult! O_O
// Can I? (v_v)?
// Let's have a try! -_-!
// (Later)
// 15 min left... OAO
// Bug!Bug!So many bugs! T_T
// I can't solve it... >_<
// ...Is that?
// Let's use "No,commander"
// to get some score! :)
// ...
// DONE! ^_^