Submission #248724

#	Time	Username	Problem	Language	Result	Execution time	Memory
248724		legend	Arranging Shoes (IOI19_shoes)	C++17	50 / 100	1091 ms	1948 KiB

shoes

#include "shoes.h"
#include <bits/stdc++.h>
using namespace std;

long long count_swaps(std::vector<int> s) {
	long long ans = 0;
	for(int i = 0;i<s.size();i+=2){
        for(int j = i+1;j<s.size();j++){
            if(s[j] == -s[i]){
                for(int k = j;k>i+1;k--){
                        swap(s[k],s[k-1]);
                        ans++;
                }
                break;
            }
        }
        if(s[i]>s[i+1]) ans++;

	}
//	system("pause");
	return ans;
}

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:7:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for(int i = 0;i<s.size();i+=2){
                ~^~~~~~~~~
shoes.cpp:8:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         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