#include<bits/stdc++.h>
using namespace std;
int main(){
    int n,m=-1;
    cin>>n;
    int b;
    for(int i=1;i<=n;i++){
        cin>>b;
        if(b>m){
            m=b;
        }
    }
    cout<<m;
    return 0;
}
没数据

C++ :

#include<bits/stdc++.h>
using namespace std;
int main(){
	int n,a[n],max=-100000;
	cin>>n;
	for(int i=0;i<n;i++){
		cin>>a[i];
		if(a[i]>max)max=a[i];
	}
	cout<<max<<endl;
	return 0;	
}

Python :

# coding=utf-8
n=int(input())
a=input().split()
s=0
m=1
for i in a:
    if int(i)>m:
        m=int(i)
print(m)