Submission #248806

#	Time	Username	Problem	Language	Result	Execution time	Memory
248806		legend	Arranging Shoes (IOI19_shoes)	C++17	50 / 100	1088 ms	3192 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++){
        if(s[i] == 0) continue;
        for(int j = i+1;j<s.size();j++){
            if(s[j] == 0) ans--;
            if(s[j] == -s[i]){
                ans+=(j-i-1);
                if(s[i]>s[j]) ans++;
                s[j] = 0;
                break;
            }
        }

	}
//	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++){
                ~^~~~~~~~~
shoes.cpp:9:26: 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