Test case details

Preparation Code

var rand =  function(){          var  r= Math.random()-0.5          if(r <0) r = -1;          else if(r>0) r = 1         }         var suma = 0;

Test cases

Test #1

suma += rand();

Test #2

var r = rand(); if(r>0) r++; else if(r<0) r--