POJ 2080 Calendar

题目链接：http://poj.org/problem?id=2080

题目不是很难，也没什么说的，直接看代码吧：

#include<iostream>
#include<stdio.h>
using namespace std;
int year(int m)
{
	if(m % 4 == 0 && m % 100 != 0 || m % 400 == 0)
		return 1;
	else
		return 0;
}
int main()
{
	int n,i,j,years[2] = {365,366};
	int m1[2][12]={31,28,31,30,31,30,31,31,30,31,30,31,31,29,31,30,31,30,31,31,30,31,30,31};
	char week[7][10] = {"Saturday","Sunday","Monday","Tuesday","Wednesday","Thursday","Friday"};
	while(1)
	{
		scanf("%d",&n);
		int x = n;
		if(n == -1)	break;
		else
		{
			for(i = 2000;n >= years[year(i)];i++)
				n -= years[year(i)];
			for(j = 0;n >= m1[year(i)][j];j++)
				n -= m1[year(i)][j];
			printf("%d-%02d-%02d %s\n",i,j+1,n+1,week[x % 7]);
		}
	}
	return 0;
}