Problem:
Score : 100 points

Problem Statement

On some day in January 2018, Takaki is writing a document. The document has a column where the current date is written in yyyy/mm/dd format. For example, January 23, 2018 should be written as 2018/01/23.

After finishing the document, she noticed that she had mistakenly wrote 2017 at the beginning of the date column. Write a program that, when the string that Takaki wrote in the date column, S, is given as input, modifies the first four characters in S to 2018 and prints it.

Constraints

S is a string of length 10.

The first eight characters in S are 2017/01/.

The last two characters in S are digits and represent an integer between 1 and 31 (inclusive).

Input

Input is given from Standard Input in the following format:

S

Output

Replace the first four characters in S with 2018 and print it.

Sample Input 1

2017/01/07

Sample Output 1

2018/01/07

Sample Input 2

2017/01/31

Sample Output 2

2018/01/31

Solution in C (GCC 5.4.1) (judge verdict: Wrong Answer)

//5J43	Batbayar Bat-Erdene
//15
#include <stdio.h>

int main(){

	int N, Y;
	int x=0, y=0, z=0;
	printf("入力:");
	int a = scanf("%d	%d", &N, &Y);
	
	for(int i=N; i>=0; i--){
		for(int j=N-i; j>=0; j--){
			//for(int k=N-j-i; k>=0; k--){
			int k=N-j-i;
				if((i+j+k) == N){
					if((10000*i+5000*j+1000*k) == Y){
						printf("出力:%d	%d	%d\n", i, j, k);
						return 0;
					}
				}
			//}
		}
	}
	
	printf("出力:-1	-1	-1");
	return 0;
}