View Compilation Error

0_0_36694773_14428.cpp:2:2: error: 'cin' does not name a type
  cin >> a >> b >> c >> d >> n;
  ^
0_0_36694773_14428.cpp:3:2: error: expected unqualified-id before 'for'
  for (int i = 1; i <= 54; ++i){
  ^
0_0_36694773_14428.cpp:3:18: error: 'i' does not name a type
  for (int i = 1; i <= 54; ++i){
                  ^
0_0_36694773_14428.cpp:3:27: error: expected unqualified-id before '++' token
  for (int i = 1; i <= 54; ++i){
                           ^