#include<iostream>
#include<queue>
using namespace std;
int main()
{
int a, b, c;
cin >> a >> b >> c;
priority_queue<int>temp;
temp.push(a);
temp.push(b);
temp.push(c);
cout << temp.top();
}
不要亂吃毒...
int a,b,c;
cin>>a>>b>>c;
cout<<max(a,max(b,c))<<"\n";