E3-C

#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <math.h>
int leapyear(int year){
    return (year % 400 == 0) || ((year % 4 == 0) && (year % 100 != 0));
}
int main(){
    int n, year, month, day, hour, minute;
    char input[64] = { 0 };
    int monthdays[13] = { 0,31,28,31,30,31,30,31,31,30,31,30,31 };
    fgets(input, 63, stdin);
    sscanf(input, "%d", &n);
    while(n--){
        fgets(input, 63, stdin);
        sscanf(input, "%d.%d.%d %d:%d", &year, &month, &day, &hour, &minute);
        hour += (minute / 60);
        minute %= 60;
        day += (hour / 24);
        hour %= 24;
        while(month > 12){
            month -= 12;year += 1;
        }
        if(leapyear(year)){
            monthdays[2] = 29;
        }
        else{
            monthdays[2] = 28;
        }
        while(day > monthdays[month]){
            day -= monthdays[month];
            month += 1;
            if(month == 13){
                month = 1;year += 1;
            }
            if(leapyear(year)){
                monthdays[2] = 29;
            }
            else{
                monthdays[2] = 28;
            }
        }
        printf("%04d.%02d.%02d %02d:%02d\n", year, month, day, hour, minute);
    }
    return 0;
}