Submission #924607

#	Time	Username	Problem	Language	Result	Execution time	Memory
924607		LucaLucaM	Arranging Shoes (IOI19_shoes)	C++17	50 / 100	1090 ms	3248 KiB

shoes

#include "shoes.h"
#include <iostream>
typedef long long ll;

ll count_swaps(std::vector<int> s) {
  ll answer = 0;
  for (int i = 0; i < (int) s.size(); i += 2) {
    int j = i + 1;
    while (s[i] != -s[j]) {
      j++;
    }
    if (s[i] < 0) {
      answer += j - i - 1;
    } else {
      answer += j - i;
    }
    while (j - 1 > i) {
      std::swap(s[j], s[j - 1]);
      j--;
    }
    if (s[i] > 0) {
      std::swap(s[i], s[i + 1]);
    }
  }
  return answer;
}

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