/*
* CANDY3.cpp
*
* Created on: Jun 4, 2014
* Author: Arpit Bhayani
*/
#include <cstdio>
#include <cstdlib>
#include <iostream>
using namespace std;
#define DEBUG 0
#define gc getchar
#define ll long long
void scanint(ll int &x) {
register ll int c = gc();
x = 0;
for(;(c<48 || c>57);c = gc());
for(;c>47 && c<58;c = gc()) {x = (x<<1) + (x<<3) + c - 48;}
}
int readline ( char * str ) {
int i = 0;
char ch;
while ( (ch=getchar()) != '\n' ) {
str[i++] = ch;
}
str[i] = '\0';
return i;
}
int main ( int argc , char * argv[] ) {
int t;
scanf("%d" , &t);
while ( t-- ) {
ll int sum = 0;
ll int n,x;
scanf("%lld" , &n);
for ( ll int i = 0 ; i < n ; i++ ) {
scanf("%lld" , &x);
sum = (sum + x) % n;
}
if ( sum == 0 )
cout << "YES" << endl;
else
cout << "NO" << endl;
}
return 0;
}
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