Submission #143987

#	Time	Username	Problem	Language	Result	Execution time	Memory
143987		Nucleist	Arranging Shoes (IOI19_shoes)	C++14	50 / 100	1059 ms	1912 KiB

shoes

#include <bits/stdc++.h>
#include "shoes.h" 
using namespace std; 
#define flash ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0)
#define debug(x) cerr << " - " << #x << ": " << x << endl;
#define debugs(x, y) cerr << " - " << #x << ": " << x << " " << #y << ": " << y << endl;
#define all(x) (x).begin(),(x).end()
#define sz(x) (ll)x.size()
#define ll long long
#define INF 1000000000
#define pb push_back
struct greateri
{
    template<class T>
    bool operator()(T const &a, T const &b) const { return a > b; }
};
ll count_swaps(vector<int>S)
{
  //flash;
  ll ans=0;
  ll index=0;
  int n=S.size()/2;
  for (int i = 0; i < 2*n; i+=2)
  {
    for (int j = i+1; j < 2*n; ++j)
    {
      if(S[j]==(-S[i]))
      {
        int nexi=j;
        while(S[i+1]!=(-S[i]))
        {
          int k = S[nexi-1];
          S[nexi-1]=S[nexi];
          S[nexi]=k;
          nexi--;
          ans++;
        }
        break;  
      }
    }
    if(S[i]>0)
    {
      int yo=S[i];
      S[i]=S[i+1];
      S[i+1]=yo;
      ans++;
    }
  }
  return ans;
}
//code the AC sol !
// BS/queue/map

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:21:6: warning: unused variable 'index' [-Wunused-variable]
   ll index=0;
      ^~~~~

• Subtask 1: 10 / 10
• Subtask 2: 20 / 20
• Subtask 3: 0 / 20
• Subtask 4: 0 / 15
• Subtask 5: 20 / 20
• Subtask 6: 0 / 15