Jan 2012
8 / 8
Jun 2012
Jun 2012
shashank_mnnit14
Jan '12

include

include

int main()
{
int t,i;
scanf("%d",&t);
int arr[t];
long long int out;
for(i=0;i{ scanf("%d",&arr[i]);
out=floor(arr[i](arr[i]+2)((2*arr[i])+1)/8);
printf("%lld\n",out);
}
return 0;
}

please help !!!

  • created

    Jan '12

  • last reply

    Jun '12
  • 7

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leppyr64
Jan '12

You need to use a datatype that will hold everything that you want to put in it. If your solution is long long, then your intermediate variables either need to be long long or you need to typecast them to long long.

shashank_mnnit14
Jan '12

i changed all variables to long long.. it worked.. but i couldn't understand it.. !! please explain ?

4 months later
vickywiz
Jun '12

Getting WA. Plz Help. I hav 

used the standard formula. 
[code]
#include<stdio.h>
#include<math.h>
int main()
{
  int t;
long long tot,n;
  scanf("%d",&t);
  while(t--)
    {
      scanf("%lld",&n);
      tot=(long long)floor((n*(n+2)*(2*n+1))/8);
      printf("%lld\n",tot);
    }
  return 0;
}