https://www.xinyoudui.com/ac/contest/7770014CA00032200D1063/problem/1219

#include<bits/stdc++.h>
using namespace std;
void check_min(int &x,int y){
	  if(x<y){
	  	x=y;
	  }
}
void check_max(int &x,int y){
	  if(x>y){
	  	x=y;
	  }
}
int main()
{   
	
	int n,mx=INT_MIN,mn=INT_MAX;
	cin>>n;
	int a;
	for(int i=0;i<n;i++){
		cin>>a;
		check_max(mx,a);
		check_min(mn,a);
	}
	cout<<mx<<" "<<mn;
	
	return 0;
}