115.cpp

平时acm训练时ac的源代码

//115

#include <stdio.h>

int main(void)
{
	int y[12] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
	int n, m, p;
	int s=0;
	scanf("%d %d",&n,&m);
	if ((m==1||m==3||m==5||m==7||m==8||m==10||m==12)&&(n>31))
	{
		printf("Impossible");
	}
	else if((m==2)&&(n>28))
	{
		printf("Impossible");
	}
	else if((m==4||m==6||m==9||m==11)&&(n>30))
	{
		printf("Impossible");
	}
	else if (m<=0||n<=0||m>12)
	{
		printf("Impossible");
	}
	else
	{
		for(int i=0;i<m-1;i++)
		{
			s = s + y[i];
		}
		s = s + n;
		p = s % 7;
		switch (p)
		{
		case 1: printf("1"); break;
		case 2: printf("2"); break;
		case 3: printf("3"); break;
		case 4: printf("4"); break;
		case 5: printf("5"); break;
		case 6: printf("6"); break;
		case 0: printf("7"); break;
		default:break;
		}
	}
	return 0;
}