HDU-6441 Find Integer

#include <iostream>
#include <stdlib.h>
#include <string>
#include <vector>
#include <algorithm>

using namespace std;
int main()
{
    int T;
    scanf("%d",&T);
    while(T--)
    {
        long long int n,a;
        scanf("%lld %lld",&n,&a);
        if(n==0||n>2)
        {
            printf("-1 -1
");
        }
        else if(n==1)
        {
            printf("%lld %lld
",1,a+1);
        }
        else if((a&0x1)==1)
        {
            long long int b,c;
            long long tmp = (a-1)/2;
            b = 2*tmp*(tmp+1);
            c = 2*tmp*(tmp+1)+1;
            printf("%lld %lld
",b,c);
        }
        else
        {
            long long int b,c;
            long long tmp = a/2-1;
            b = tmp*tmp+2*tmp;
            c = tmp*tmp+2*tmp+2;
            printf("%lld %lld
",b,c);
        }
    }
    return 0;
}