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  1. $i=<>;
  2. while($i--)
  3. {
  4. $n=<>;
  5. if(0==$n%2)
  6. {
  7. $n=$n/2;
  8. $x=$n*($n+1)*(4*$n+1)/2;
  9. }
  10. else
  11. {
  12. $n=($n-1)/2;
  13. $x=($n+1)*(4*$n*$n+7*$n+2)/2;
  14. }
  15. print $x,"\n";
  16. }
Success #stdin #stdout 0s 4596KB
stdin
9
1
2
3
4
5
6
7
8
1000000
stdout
1
5
13
27
48
78
118
170
2.5000062500025e+17