Codeforces Water 100 question nineth codeforces Beta Round #63 (Div. 2) Young physicist (math)

Title Link: Http://www.codeforces.com/problemset/problem/69/A
Test instructions: give you n three-dimensional space vector, to find the vector of n vector and whether it is zero.
C + + code:

#include <cstdio>#include<iostream>using namespacestd;intx, y, Z;intMain () {intN, TX, Ty, TZ; CIN>>N;  while(n--) {cin>> TX >> Ty >>TZ; X+ = tx, y + = ty, z + =TZ; } puts (!x &&!y &&!z?"YES":"NO"); return 0;}

C + +

Codeforces question 100 codeforces Beta Round #63 (Div. 2) Young physicist (math)