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- #include<stdio.h>
- int main()
- {
- int n;
- scanf("%d", &n);
- while(n--){
- long long x;
- scanf("%lld", &x);
- long long y=sqrt(x);
- if((y*y)==x) printf("YES\n");
- else printf("NO\n");
- }
- return 0;
- }
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