The program must accept a valid date D in any format as the input. The day DD, the month MM or MMM and the year YYYY in the date D can be in any order. The program must print the format of the given date D as the output. If more than one formats are applicable for the given date D, the program must print -1 as the output.
Note: MMM will be like Jan, Feb, Mar,…. till Dec.

Boundary Condition(s):
1 <= DD <= 31
1 <= MM <= 12
1000 <= YYYY <= 2020

Input Format:
The first line contains D.

Output Format:
The first line contains the date format of D.

Example Input/Output 1:
Input:
02-Nov-2012

Output:
DD-MMM-YYYY

Explanation:
Here the given date is 02-Nov-2012, which is in the format DD-MMM-YYYY.
Hence the output is DD-MMM-YYYY

Example Input/Output 2:
Input:
1997-27-02

Output:
YYYY-DD-MM

Example Input/Output 3:
Input:
04-06-2017

Output:
-1

Explanation:
Here two formats are applicable, they are DD-MM-YYYY and MM-DD-YYYY.
Hence the output is -1

Python:

li=list(input().split("-"))
fi=list(filter(lambda x:len(x)==2,li))
c=1
ma=0
k=0
res=[]
if(len(fi)==2 and int(fi[1])<13 and int(fi[0])<13):
    print(-1)
    k=1
else:
    if(len(fi)==2):
        ma=max(fi)
    for i in li:
        if(len(i)==4):
            res.append("YYYY")
        elif(len(i)==3):
            res.append("MMM")
        elif(len(i)==2 and int(i)<=int(ma) and int(i)<13):
            res.append("MM")
        else:
            res.append("DD")
            c=0
if(k==0):
    print("-".join(res))

Java:

import java.util.*;
public class Hello {
    public static void main(String[] args) {
//Your Code Here
Scanner sc= new Scanner(System.in);
String s[]=sc.next().split("-");
List<String> str=new ArrayList<>();
int f=0;
for(int i=0;i<s.length;i++)
{
    if(s[i].length()==4)
    str.add("YYYY");
    else if(s[i].length()==3)
    {
        if(str.contains("MM"))
        Collections.replaceAll(str,"MM","DD");
        str.add("MMM");
    }
    else
    {
        if(Integer.parseInt(s[i])>12)
        str.add("DD");
        else
        {
            if(str.contains("MM"))
            {
                f=1;
                break;
            }
            else if(!str.contains("MMM"))
            str.add("MM");
            else
            str.add("DD");
        }
    }
}
if(f==1)
System.out.print("-1");
else
{
    for(int i=0;i<str.size();i++)
    {
        System.out.print(str.get(i));
        if(i!=(str.size()-1))
        System.out.print("-");
    }
}
}
}

C++:

#include <bits/stdc++.h>
#include<cstdlib>
#include<cstdio>
using namespace std;
int f=0;
string check(char a[10])
{
    if(isalpha(a[0]))
    {
        f=1;
        return "MMM";
    }
    else if(atoi(a)>12 && atoi(a)<=31 || (f==1 && atoi(a)<=12))
        return "DD";
    else if(atoi(a)>=1000)
        return "YYYY";
    else if(atoi(a)<=12)
        return "MM";
}
void find(char a[10], char b[10], char c[10])
{
    if(check(a)==check(b) || check(b)==check(c) || check(a)==check(c))
        cout<<"-1";
    else
        cout<<check(a)<<"-"<<check(b)<<"-"<<check(c);
}
int main(int argc, char** argv)
{
    char a[10],b[10],c[10];
    scanf("%[^-]-%[^-]-%s",a,b,c);
    find(a,b,c);
}

C:

#include<stdio.h>
#include <stdlib.h>
int q=0,c=0;
void date(char g[],int l)
{
    if(l==4)
    printf("YYYY");
    if(l==3)
    {
        printf("MMM");
    }
    if(l==2)
    {
        if(q==1)
        printf("DD");
        else
        {
            if(atoi(g)>=12)
            printf("DD");
            else
            printf("MM");
        }
    }
}
int main()
{
    char d[3][5];
    scanf("%[^-]-%[^-]-%s",&d[0],&d[1],&d[2]);
    int l[3];
    l[0]=strlen(d[0]);
    l[1]=strlen(d[1]);
    l[2]=strlen(d[2]);
    for(int i=0;i<3;i++)
    {
        if(l[i]==3)
        q=1;
        if(l[i]==2)
        {
            if(atoi(d[i])<=12)
            c++;
        }
    }
    if(c==2)
    {
        printf("-1");
        return 1;
    }
    else
    {
        date(d[0],l[0]);
        printf("-");
        date(d[1],l[1]);
        printf("-");
        date(d[2],l[2]);
    }
}