joj 1753: Street Numbers

#include <stdio.h>
#define max 0x7fffffff

int main()
{
long long i,j,cnt=0;
for(i=6;;i++)
{
j = i;
long long k = i*i+i*i;
long long low = i,high = max;
while(low<=high)
{
long long mid = (low+high)/2;
long long temp = mid*mid+mid;
if(temp==k)
{
printf("%lld,%lld\n",i,mid);
cnt++;
if(cnt==10)goto aa;
break;
}
else if(temp>k)
high = mid-1;
else low = mid+1;
}
j++;
}
aa:    return 0;
}