for _ in range(int(input())):
a = int(input())
b = list(map(int, input().split()))
c = sum(b)
ans = c ** (1/2)
if str(ans) == str(int(ans))+'.0':
print('YES')
else:
print("NO")#include <bits/stdc++.h>
using namespace std;
#define lli long long int
void solve(){
lli n;
cin>>n;
lli a[n];
for(lli i = 0; i < n; i++){
cin>>a[i];
}
lli sum = 0;
for(lli i = 0; i < n; i++){
sum += a[i];
}
lli count = 0;
lli num = 1;
do{
if (num*num == sum){
count++;
}
num++;
} while(num*num <= sum);
if(count == 0){
cout<<"NO"<<endl;
} else{
cout<<"YES"<<endl;
}
}
int main(){
lli t;
cin>>t;
while(t--){
solve();
}
}Cyclic shifts | Zoos |
Build a graph | Almost correct bracket sequence |
Count of integers | Differences of the permutations |
Doctor's Secret | Back to School |
I am Easy | Teddy and Tweety |
Partitioning binary strings | Special sets |
Smallest chosen word | Going to office |
Color the boxes | Missing numbers |
Maximum sum | 13 Reasons Why |
Friend's Relationship | Health of a person |
Divisibility | A. Movement |
Numbers in a matrix | Sequences |
Split houses | Divisible |
Three primes | Coprimes |
Cost of balloons | One String No Trouble |