提出 9595174f-8769-4214-aafc-16fef7826958

コード

#include <bits/stdc++.h>
using namespace std;

int main() {
    int q;
    cin >> q;

    vector<int> A(0);
    while (q--) {
        int T, X;
        cin >> T;

        if (T == 1) { 
            cin >> X;
           A.push_back(X)
        } else if (T == 2) { 
            cin >> X;
           A.insert(A.begin(), X)
        }else{
            A.erase(A.begin(),X)
            cout << A.at(0)
        }
           
        }
    }

結果

問題	点数	言語	結果	実行時間	メモリ
E - Q2	0	C++	WJ	0 ms	0 KiB

コンパイルエラー

Main.cpp: In function 'int main()':
Main.cpp:15:26: error: expected ';' before '}' token
   15 |            A.push_back(X)
      |                          ^
      |                          ;
   16 |         } else if (T == 2) {
      |         ~                 
Main.cpp:18:34: error: expected ';' before '}' token
   18 |            A.insert(A.begin(), X)
      |                                  ^
      |                                  ;
   19 |         }else{
      |         ~                         
Main.cpp:20:20: error: no matching function for call to 'std::vector<int>::erase(std::vector<int>::iterator, int&)'
   20 |             A.erase(A.begin(),X)
      |             ~~~~~~~^~~~~~~~~~~~~
In file included from /usr/include/c++/13/vector:66,
                 from /usr/include/c++/13/functional:64,
                 from /usr/include/x86_64-linux-gnu/c++/13/bits/stdc++.h:53,
                 from Main.cpp:1:
/usr/include/c++/13/bits/stl_vector.h:1534:7: note: candidate: 'constexpr std::vector<_Tp, _Alloc>::iterator std::vector<_Tp, _Alloc>::erase(const_iterator) [with _Tp = int; _Alloc = std::allocator<int>; iterator = std::vector<int>::iterator; const_iterator = std::vector<int>::const_iterator]'
 1534 |       erase(const_iterator __position)
      |       ^~~~~
/usr/include/c++/13/bits/stl_vector.h:1534:7: note:   candidate expects 1 argument, 2 provided
/usr/include/c++/13/bits/stl_vector.h:1562:7: note: candidate: 'constexpr std::vector<_Tp, _Alloc>::iterator std::vector<_Tp, _Alloc>::erase(const_iterator, const_iterator) [with _Tp = int; _Alloc = std::allocator<int>; iterator = std::vector<int>::iterator; const_iterator = std::vector<int>::const_iterator]'
 1562 |       erase(const_iterator __first, const_iterator __last)
      |       ^~~~~
/usr/include/c++/13/bits/stl_vector.h:1562:52: note:   no known conversion for argument 2 from 'int' to 'std::vector<int>::const_iterator'
 1562 |       erase(const_iterator __first, const_iterator __last)
      |                                     ~~~~~~~~~~~~~~~^~~~~~