제출 #208325

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
208325		alexxela12345	Arranging Shoes (IOI19_shoes)	C++17	컴파일 에러	0 ms	0 KiB

shoes

#include <bits/stdc++.h>

long long count_swaps(vector<int> a) {
  int n = a.size() / 2;
  long long ans = 0;
  while (n) {
    int x = a[0];
    int ind = 1;
    while (a[ind] != -x) {
      ind++;
    }
    if (x < 0) {
      ans += ind - 1;
    } else {
      ans += ind;
    }
    a.erase(a.begin() + ind);
    a.erase(a.begin());
    n--;
  }
  return ans;
}

컴파일 시 표준 에러 (stderr) 메시지

shoes.cpp:3:23: error: 'vector' was not declared in this scope
 long long count_swaps(vector<int> a) {
                       ^~~~~~
shoes.cpp:3:23: note: suggested alternative:
In file included from /usr/include/c++/7/vector:64:0,
                 from /usr/include/c++/7/functional:61,
                 from /usr/include/x86_64-linux-gnu/c++/7/bits/stdc++.h:71,
                 from shoes.cpp:1:
/usr/include/c++/7/bits/stl_vector.h:216:11: note:   'std::vector'
     class vector : protected _Vector_base<_Tp, _Alloc>
           ^~~~~~
shoes.cpp:3:30: error: expected primary-expression before 'int'
 long long count_swaps(vector<int> a) {
                              ^~~