Submission #995263

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
995263	2024-06-08 17:48:21	gmroh06	Just Long Neckties (JOI20_ho_t1)	C++17	Compilation error	0 ms	0 KiB

ho_t1

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#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pll = pair<ll, ll>;
inline void fastio() {
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    cout.tie(nullptr);
}
template <typename T> class arr {
private:
    vector<T> v;
public:
    arr(const ll& n) {
        v.resize(n);
    }
    vector<T>::iterator begin() {
        return v.begin();
    }
    vector<T>::iterator end() {
        return v.end();
    }
    T& operator [] (const ll& idx) {
 
 
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Compilation message (stderr)

ho_t1.cpp:22:5: error: need 'typename' before 'std::vector<_Tp>::iterator' because 'std::vector<_Tp>' is a dependent scope
   22 |     vector<T>::iterator begin() {
      |     ^~~~~~~~~
      |     typename 
ho_t1.cpp:26:5: error: need 'typename' before 'std::vector<_Tp>::iterator' because 'std::vector<_Tp>' is a dependent scope
   26 |     vector<T>::iterator end() {
      |     ^~~~~~~~~
      |     typename 
ho_t1.cpp: In function 'int main()':
ho_t1.cpp:68:12: error: 'class arr<long long int>' has no member named 'begin'
   68 |     sort(v.begin(), v.end());
      |            ^~~~~
ho_t1.cpp:68:23: error: 'class arr<long long int>' has no member named 'end'
   68 |     sort(v.begin(), v.end());
      |                       ^~~
ho_t1.cpp:69:12: error: 'class arr<std::pair<long long int, long long int> >' has no member named 'begin'
   69 |     sort(p.begin(), p.end());
      |            ^~~~~
ho_t1.cpp:69:23: error: 'class arr<std::pair<long long int, long long int> >' has no member named 'end'
   69 |     sort(p.begin(), p.end());
      |                       ^~~