Submission #335463

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
335463	2020-12-12 17:29:39	MohammadHijaz	Arranging Shoes (IOI19_shoes)	C++14	50 / 100	1093 ms	1900 KiB

shoes

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
#include "shoes.h"
#include<bits/stdc++.h>
using namespace std;
long long count_swaps(std::vector<int> s) {
  int x = s.size();
  int last = 0;
  long long ans = 0;
  for (int i = 0; i < x; i += 2) {
            int tar;
        for (int j = i + 1; j < x; j++) {
          if (s[j] == s[i]*-1) {
            tar = j;
            break;
          }
        }
            while(i + 1 != tar) {
                swap(s[tar] , s[tar - 1]);
                tar--;
                ans++;
            }
            if (s[i] > s[i + 1]) {
                swap(s[i + 1] , s[i]);
                ans++;
            }   
  }
  return ans;
}
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:6:6: warning: unused variable 'last' [-Wunused-variable]
    6 |  int last = 0;
      |      ^~~~
shoes.cpp:9:17: warning: 'tar' may be used uninitialized in this function [-Wmaybe-uninitialized]
    9 |             int tar;
      |                 ^~~

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