Submission #597939

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
597939	2022-07-17 08:08:30	supercatex	Arranging Shoes (IOI19_shoes)	C++14	50 / 100	1078 ms	2000 KiB

shoes

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

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:8:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    8 |     for (int i = 0; i < s.size(); i += 2) {
      |                     ~~^~~~~~~~~~
shoes.cpp:10:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   10 |             for (int j = i + 1; j < s.size(); j++) {
      |                                 ~~^~~~~~~~~~
shoes.cpp:19:35: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |             for (int j = i + 2; 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