C++ :

#include <iostream>
using namespace std;
int main(){
	for(int n;cin>>n;)
		if(n%4==0)
			cout<<"loss"<<endl;
		else
			cout<<n%4<<endl;
	return 0;
}

Java :

import java.util.*;
public class Main {
	public static void main(String[] args) {
      Scanner in =new Scanner(System.in);
		int n=0;
		while(in.hasNext()) {
			n=in.nextInt();
			if(n%4!=0){
				System.out.println(n%4);
			}else
			{
				System.out.println("loss");
			}
		}
	}

}