[1d] 11719 : 그대로 출력하기2

#include <stdio.h>
 
int main () {
    int a;
    
    a = getchar();
    
    while(a != -1) {
        putchar(a);
        a = getchar();
    }
    
    return 0;
}

https://www.acmicpc.net/problem/11719

.. 11719랑 똑같은코드인데 되네?