运行 ID: 79745

Main.cc: In function ‘int countSequences(int)’:
Main.cc:3:9: error: ‘memo’ was not declared in this scope
     if (memo[k] != 0) {
         ^~~~
Main.cc:17:5: error: ‘memo’ was not declared in this scope
     memo[k] = total;
     ^~~~
Main.cc: In function ‘int main()’:
Main.cc:23:5: error: ‘cin’ was not declared in this scope
     cin >> n;
     ^~~
Main.cc:23:5: note: suggested alternative: ‘main’
     cin >> n;
     ^~~
     main
Main.cc:26:5: error: ‘memo’ was not declared in this scope
     memo.resize(n + 1, 0);
     ^~~~
Main.cc:29:5: error: ‘cout’ was not declared in this scope
     cout << countSequences(n) << endl;
     ^~~~
Main.cc:29:34: error: ‘endl’ was not declared in this scope
     cout << countSequences(n) << endl;
                                  ^~~~
Main.cc:29:34: note: suggested alternative: ‘enum’
     cout << countSequences(n) << endl;
                                  ^~~~
                                  enum