Submission

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Score: 10

User: tankunkid

Problemset: ปฏิทินวันแม่

Language: c

Time: 0.001 second

Submitted On: 2024-09-26 14:21:12

#include <stdio.h>

int main() {
    int m, d, sumd = 0;
    scanf("%d", &m);
    scanf("%d", &d);
    
    // Days in each month
    int month[12] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
    
    // Fixed date for Mother's Day (August 12)
    int momm = 8;  // August
    int momd = 12; // 12th day of August
    
    // Case 1: If the input month is after August (momm)
    if (m > momm) {
        for (int i = momm; i < m - 1; i++) {
            sumd += month[i];  // Sum days between months
        }
        sumd += month[momm - 1] - momd; // Days left in August after 12th
        sumd += d; // Add the days in the target month
    }
    // Case 2: If the input month is before August
    else if (m < momm) {
        for (int i = m; i < momm - 1; i++) {
            sumd += month[i];  // Sum days between months
        }
        sumd += month[m - 1] - d; // Remaining days in the input month
        sumd += momd; // Add days up to the 12th in August
    }
    // Case 3: If the input month is August itself
    else {
        if (d > momd) {
            sumd += d - momd;  // If the input day is after the 12th
        } else {
            sumd += momd - d;  // If the input day is before the 12th
        }
    }
    
    // Determine the weekday of Mother's Day (August 12)
    int mother_day_of_week = 6; // August 12 is Saturday (6th day of the week)
    
    // Adjust for positive and negative offsets in days
    int result_day_of_week = (mother_day_of_week + sumd) % 7;
    if (result_day_of_week <= 0) {
        result_day_of_week += 7;
    }
    
    // Print the resulting weekday
    printf("%d", result_day_of_week);
    
    return 0;
}