#include <iostream>
#include<math.h>
using namespace std;

int main(){
    
 cout<<"hi.\n";
 cout<<"12.01.2026.\n";
 cout<<min(5,10)<<"\n";
 cout<<max(15,3)<<"\n";
 cout<<log(3)<<"\n";
 cout<<sqrt(81)<<"\n";


    return 0;
}