#include <iostream>

using namespace std;

int arr[12] = {31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};

void update(int year) {//更新每个月有多少天数组
    if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0)) {
        arr[1] = 29;
    } else {
        arr[1] = 28;
    }
}

int main() {
    int m;
    while (scanf("%d", &m) != EOF) {
        for (int i = 0; i < m; i++) {
            int year, month, day, n;
            scanf("%d %d %d %d", &year, &month, &day, &n);
            update(year);//先更新一下当前年份是平年还是闰年
            for (int j = 0; j < n; j++) {
                day++;//增加日期
                if (day > arr[month - 1]) {//日期超出，增加月份
                    month++;
                    day = 1;
                    if (month > 12) {//月份超出，增加年份
                        year++;
                        month = 1;
                        update(year);//年份改变，平闰年可能改变，需要更新一下
                    }
                }
   ...