AC

上代码！！！
不注意看
上重点

#include<iostream>
using namespace std;
int main() {
	int n;
    cin >> n;
    int i = 1;
    int a,max_num;
    cin >> max_num;
	do{
        cin >> a;
        if(a > max_num){
            max_num = a;
        }
        i = i + 1;
    }while(i <= n-1);
	cout << max_num;
	return 0;
}