#include<bits/stdc++.h>
using namespace std;
int main(){
  	int n;
  	cin>>n;
  	cout<<n%10<<" "<<n/10;
	return 0;
}

include<bits/stdc++.h>

using namespace std; int main(){

int n,m;

double ans; cin>>n>>m; ans=n-m*0.8; printf("%.2lf",ans);

return 0;

}