提交记录 #463

#include <stdio.h>

int leap_year(int year) {
    return (year % 4 == 0 && year % 100 != 0) || year % 400 == 0;
}

int year_days(int year) {
    return leap_year(year) ? 366 : 365;
}

int days(int year, int month, int day) {
    int months[13] = {0, 31, leap_year(year) ? 29 : 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};
    int i;
    for (i = 1; i < month; i++) {
        day += months[i];
    }
    return day;
}

int jisuan(int y2, int m2, int d2) {
    int y1 = 2012, m1 = 4, d1 = 8;
    int day1 = days(y1, m1, d1);
    int day2 = days(y2, m2, d2);
    int re = 0;
    int yearsDiff = y2 - y1;

    if (yearsDiff == 0) {
        re = day2 - day1;
    } else {
        for (int i = y1; i < y2; i++) {
            int daysInYear = year_days(i);
            if (i == y1) {
                re += daysInYear - day1; // 从4月8日开始计算剩余天数
            } else if (i == y2 - 1) {
                re += day2;
            } else {
                re += daysInYear;
            }
        }
    }
    if(y2>2100)
    re--;
    return re;
}

void calculateRestriction(int daysDiff) {
    int weekDayIndex = (daysDiff + 7) % 7;
    char restrictions[7][100] = {"Free.", "1 and 6.", "2 and 7.", "3 and 8.", "4 and 9.", "5 and 0.", "Free."};
    printf("%s\n", restrictions[weekDayIndex]);
}

int main() {
    int year, month, day;
    scanf("%d %d %d", &year, &month, &day);
    int dd = jisuan(year, month, day);
    calculateRestriction((dd + 1) % 7); // 加1是因为从0开始计数
    return 0;
}