Run id: 127728

Main.cc:2:2: error: 'cin' does not name a type
  cin>>a;
  ^
Main.cc:3:2: error: expected unqualified-id before 'for'
  for(int i=1;i<=3*n;i++)
  ^
Main.cc:3:14: error: 'i' does not name a type
  for(int i=1;i<=3*n;i++)
              ^
Main.cc:3:21: error: 'i' does not name a type
  for(int i=1;i<=3*n;i++)
                     ^
Main.cc:8:2: error: expected unqualified-id before 'for'
  for(int i=1;i<=n;i++)
  ^
Main.cc:8:14: error: 'i' does not name a type
  for(int i=1;i<=n;i++)
              ^
Main.cc:8:19: error: 'i' does not name a type
  for(int i=1;i<=n;i++)
                   ^
Main.cc:16:2: error: 'cout' does not name a type
  cout<