#include<stdio.h>
int main(){
    int a;
int n1,n2,n3,n4;
scanf("%d %d %d %d",&n1,&n2,&n3,&n4);
if(a==0){
printf("Invalid input");
}
else(a>0){
printf("%d %d %d %d",n1,n2,n3,n4);
}
return0;