#include<stdio.h>

int dist1,dist2;

int swap(){
    
    dist1=(dist1+dist2) - (dist2=dist1);
    
}

int main(){
    
    scanf("%d\n%d",&dist1,&dist2);
    
    if(dist1<0 || dist2<0){
        printf("Invalid Input");
        return 0;
    }
    swap();
    printf("%d\n%d",d1,d2);
    return 0;
}