Submission

Score: 100

User: qwerty_qaz

Problemset: ปฏิทินวันแม่

Language: c

Time: 0.002 second

Submitted On: 2025-10-11 20:48:58

#include <stdio.h>

int not_less(int start, int stop){
    for(int i = 0; i<stop; i++){
        start -= 1;
        if(start ==0){
            start = 7;
        }
    } return start;
}

int main(){
    int month_days[] = {31, 28, 31, 30, 31, 30, 31,31,30,31,30,31};
    int m,d, sum_day=0, ans;
    scanf("%d%d", &m,&d);

    if(m ==8){
        ans = (11+d)%7;
        printf("%d", (ans ==0) ? 7: ans);
    }else if( m < 8){
        sum_day += 11;
        for(int i = 7; i >= m; i--){
            sum_day += month_days[i-1];
        }
        ans = (sum_day+d)%7;
        if((ans % 7) == 0) ans = 7;
        printf("%d", ans);
    } else if(m > 8){
        sum_day += 20;
        for(int i = 9; i<m; i++){
            sum_day += month_days[i-1];
        }
        ans = not_less(d, (sum_day%7));
        printf("%d", ans);
    }

    return 0;
}