제출 #339384

#제출 시각아이디문제언어결과실행 시간메모리
339384israeladewuyiArranging Shoes (IOI19_shoes)C++17
컴파일 에러
0 ms0 KiB
#include <bits/stdc++.h> using namespace std; typedef long long ll; typedef vector<int> vi; typedef vector<string> vs; #define PB push_back #define pb pop_back #define in insert #define endl "\n" const unsigned int M = 1000000007; ll count_swaps(vi s){ int n = s.size(); int swaps = 0; for(int i = 0; i < n;i+=2){ int x = abs(s[i+1]); if(v[i] != -x)swaps++; } return swaps; } //int main(){ // vi v; // v.PB(2); // v.PB(-2); // cout<<count_swaps(v); //}

컴파일 시 표준 에러 (stderr) 메시지

shoes.cpp: In function 'll count_swaps(vi)':
shoes.cpp:18:6: error: 'v' was not declared in this scope
   18 |   if(v[i] != -x)swaps++;
      |      ^