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  1. <?php
  2. fscanf(STDIN, "%d", $t);
  3. while ($t--) {
  4.     fscanf(STDIN, "%d", $n);
  5.     $arr = array_map('intval', explode(' ', trim(fgets(STDIN))));
  6.     $sum = array_sum($arr);
  7.     $sqrt = (int) sqrt($sum);
  8.     echo ($sqrt * $sqrt == $sum) ? "YES\n" : "NO\n";
  9. }
Success #stdin #stdout 0.03s 25668KB
comments (?)
stdin
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5
1
9
2
14 2
7
1 2 3 4 5 6 7
6
1 3 5 7 9 11
4
2 2 2 2
stdout
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YES
YES
NO
YES
NO
https://ideone.com/EvaCGX
language:
PHP (php 7.3.5)
created:
4 hours ago
visibility:
public

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