C语言解答

#include<stdio.h>
int main(){
char c=getchar();
putchar(c);
  putchar('\n');
return 0;}

C++解答

#include <stdio.h>
int main() {
	char c;
	c = getchar();
	putchar(c);
	putchar('\n');
	return 0;
}

Java解答

import java.util.*;
public class Main {
	public static void main(String args[]) {
		Scanner cin=new Scanner(System.in);
		System.out.printf("%s",cin.next());
	}
}

Python解答

print raw_input()