Submission #284647

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
284647	2020-08-27 19:58:37	triplem5ds	Arranging Shoes (IOI19_shoes)	C++14	50 / 100	1096 ms	3192 KiB

shoes

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#include "shoes.h"
#include "bits/stdc++.h"
using namespace std;
long long count_swaps(std::vector<int> s) {
  long long cnt = 0;
  for(int i = 0; i < s.size(); i += 2){
    if(s[i] < 0){
      for(int j = i + 1; j < s.size(); ++j){
        if(-s[j] == s[i]) {
          for(int k = j - 1; k > i; --k){
            swap(s[k], s[k+1]);
            cnt++;
          }
          break;
        }
      }
    } else {
      for(int j = i + 1; j < s.size(); ++j){
        if(-s[j] == s[i]) {
          for(int k = j - 1; k >= i; --k){
            swap(s[k], s[k+1]);
            cnt++;
          }
          break;
        }
      }
    }
  }
  return cnt;
}
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:6:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    6 |  for(int i = 0; i < s.size(); i += 2){
      |                 ~~^~~~~~~~~~
shoes.cpp:8:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    8 |       for(int j = i + 1; j < s.size(); ++j){
      |                          ~~^~~~~~~~~~
shoes.cpp:18:28: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |       for(int j = i + 1; j < s.size(); ++j){
      |                          ~~^~~~~~~~~~

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