#include<stdio.h>

void swap(&d1,&d2){
    
    d1=(d1+d2) - (d2=d1);
    
}

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