OJ Board

I would like to know how get 00:00 time for problem 386.I used the following code and
got time of 0:01:614.Though it got AC i would like to optimize more


#include <stdio.h>
int main()
{
int a,b,c,d;
for(a=6;a<=200;a++)
for(b=2;b<a;b++)
for(c=b;c<a;c++)
for(d=c;d<a;d++)
if(a*a*a==(b*b*b+c*c*c+d*d*d ...