Start: Jun, 26, 2019 08:30:00
2019年度暑期短学期第一天
End: Jun, 26, 2019 11:30:00
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Problem_ID: C
Result: Accepted
Time: 6ms
Memory: 1092kB
Author: 2018212212095
In contest: 1273

#include <stdio.h>
#include <math.h>

void CaculateWeekDay(int y,int m, int d)
{
    if(m==1||m==2) {
        m+=12;
        y--;
    }
    int iWeek=(d+2*m+3*(m+1)/5+y+y/4-y/100+y/400)%7;
    switch(iWeek)
    {
    case 0: printf("Monday\n"); break;
    case 1: printf("Tuesday\n"); break;
    case 2: printf("Wednesday\n"); break;
    case 3: printf("Thursday\n"); break;
    case 4: printf("Friday\n"); break;
    case 5: printf("Saturday\n"); break;
    case 6: printf("Sunday\n"); break;
    }
} 

int main() {
  int y, m, d;
  while(~scanf("%d %d %d", &y, &m, &d)) {
  	CaculateWeekDay(y, m, d);
  }
  return 0;
}