Light oj 1008（规律）

http://acm.hust.edu.cn/vjudge/contest/121398#problem/B

#include<stdio.h>
#include<string.h>
#include<math.h>
#include<queue>
#include<algorithm>
using namespace std;
typedef  long long LL;

#define maxn 450000
#define oo 0x3f3f3f3f

int main()
{
    int T, t = 1;
    long long n, m, k, x, y;

    scanf("%d", &T);

    while(T --)
    {
        scanf("%lld", &n);

        m = sqrt(n);
        k = n - m * m;

        if(m % 2 == 0)
        {
            if(!k)
            {
                x = m;
                y = 1;
            }
            else if(k <= m+1)
            {
                x = m + 1;
                y = k;
            }
            else
            {
                y = m + 1;
                x = m - (k - m - 2);
            }
        }

        else
        {
            if(!k)
            {
                y = m;
                x = 1;
            }
            else if(k <= m+1)
            {
                y = m + 1;
                x = k;
            }
            else
            {
                x = m + 1;
                y = m - (k - m - 2);
            }
        }

        printf("Case %d: %lld %lld
", t++, x, y);
    }
    return 0;
}