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<?php function isPerfect($n) { return $n[0]*$n[1]*$n[2]*$n[3]+1==pow(pow($n[0],2)+3*$n[0]+1,2); } var_dump(isPerfect([1,2,3,4]); var_dump(isPerfect(['1','2','3','4']); var_dump(isPerfect([3,9,5,6]); var_dump(isPerfect([1,2,3,4,5]); var_dump(isPerfect([a,b,c,d]; var_dump(isPerfect([1,b,3,4]); var_dump(isPerfect([1001,1002,1003,1004]));
Output for 5.4.2 - 5.4.45, 5.5.24 - 5.5.30, 5.6.8 - 5.6.14
Parse error: syntax error, unexpected ';' in /in/Ve222 on line 7
Process exited with code 255.
preferences:
195.55 ms | 1395 KiB | 64 Q