#include<bits/stdc++.h>
using namespace std;
signed main(){
	int a,b,c,d,e;
	cin>>a>>b>>c>>d>>e;
	cout<<(max(a,max(b,max(c,max(d,e)))));
}

暴打 $\max$。

#include<bits/stdc++.h>
#define int long long
#define INF 0x3f3f3f
using namespace std;
int a,b,c,d,e;
signed main(){
	cin>>a>>b>>c>>d>>e;
	cout<<max(max(a,max(b,c)),max(d,e));
	return 0;
}

哟 tj $1$ 楼

#include<bits/stdc++.h>
using namespace std;
int main()
{
	int a;
	int maxx=0;
	while(cin>>a)
	{
		maxx=max(maxx,a);
	}
	cout<<maxx;
	return 0;
}