#include<iostream>
#include<cstring>
using namespace std;
string s;
int days[4];
int months[13] = {31,28,31,30,31,30,31,31,30,31,30,31};
int year;
int month;
int day;
bool check(int date){
    year = date / 10000;
    month = date %10000/100;
    day = date %100;
    if(!month || month >13 || !day)return false;
    if(month != 2 && day > months[month])return false;
    if(month == 2){
        bool flag = year % 4 == 0 && year % 100 || year % 400 == 0;
        if(day > flag+28)return false;
    }

    return true;
}
int main(){
    int a,b,c;
    scanf("%d/%d/%d",&a,&b,&c);
    for(int i=19600101;i<=20591231;i++){
        if(check(i)){
            if((year%100==a&&month==b&&day==c)||(month==a&&day==b&&year%100==c)||(day==a&&month==b&&year%100==c)){
                printf("%d-%02d-%02d\n",year,month,day);
            }
        }
    }

    return 0;

}

作者：Anjor
链接：https://www.acwing.com/problem/content/discussion/content/2094/
来源：AcWing
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