poj 1543Perfect Cubes

#include <iostream>
#include <cstdio>
using namespace std;
int n;
int main()
{
int i, j, q, p;
while(cin>>n)
{
for(i=3; i<=n; ++i)
{
for(j=2; j<=n; ++j)
{
if(j>i)
break;
for(q=3; q<=n; ++q)
{
if(i<=j)
break;
for(p=3; p<=n; ++p)
{
if(i<=q)
break;
if(i*i*i == j*j*j + q*q*q + p*p*p && j<q && q<p)
printf("Cube = %d, Triple = (%d,%d,%d)/n", i, j, q, p);
}
}

}
}

}
return 0;
}