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