#include <iostream>
using namespace std;

int main() {
	int l = -5, r = -6;
	int m1 = (l+r)/2, m2 = l + (r-l)/2, m3 = (r+l)>>1;
	cout<<"m1: "<<m1<<endl;
	cout<<"m2: "<<m2<<endl;
	cout<<"m3: "<<m3<<endl;
	return 0;
}