Submission #3975443

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Source Code Expand

#include<iostream>
using namespacestd;
int main(){
  int n;
  cin>>n;
  int a[n];
  for(int i=0;i<n;++i)cin>>a[i];
  sort(a,a+n);
  int ans=0;
  for(int i=n-1;i>0;--i){
   if(a[i]==a[i-1])continue;
   ans=a[i-1];
    break;
  }
  cout<<ans<<endl;
  return 0;
}

Submission Info

Compile Error

./Main.cpp:2:7: error: expected nested-name-specifier before ‘namespacestd’
 using namespacestd;
       ^
./Main.cpp: In function ‘int main()’:
./Main.cpp:5:3: error: ‘cin’ was not declared in this scope
   cin>>n;
   ^
./Main.cpp:5:3: note: suggested alternative:
In file included from ./Main.cpp:1:0:
/usr/include/c++/5/iostream:60:18: note:   ‘std::cin’
   extern istream cin;  /// Linked to standard input
                  ^
./Main.cpp:8:13: error: ‘sort’ was not declared in this scope
   sort(a,a+n);
             ^
./Main.cpp:15:3: error: ‘cout’ was not declared in this scope
   cout<<ans<<endl;
   ^
./Main.cpp:15:3: note: suggested alternative:
In file included from ./Main.cpp:1:0:
/usr/include/c++/5/iostream:61:18: note:   ‘std::cout’
   extern ostream cout;  /// Linked to standard output
                  ^
./Main.cpp:15:14: error: ‘endl’ was not declared in this scope
   cout<<ans<<endl;
              ^
./Main.cpp:15:14: note: suggested alternative:
In file included from /usr/include/c++/5/iostream...