好奇第一题为什么通过不了 #include <iostream> using namespace std; int main(){ int n; cin >> n; int array[100000]; int count = 0; int head = 0; string input; for (int i = 0; i < n; i++){ int m; cin >> m; for (int j = 0; j < m; j++){ cin >> input; if (input == "PUSH"){ int number; cin >> number; count++; } if (input == "TOP"){ if (head >= count){ cout << "-1" << endl;} else cout << array[head] << endl; } if (input == "POP"){ if (head >= count){ cout << "-1" << endl; } else head++; if (input == "SIZE"){ cout << count-head << endl;} if (input == "CLEAR"){ count = 0; head = 0;} } return 0; }