Submission #196982

#	Time	Username	Problem	Language	Result	Execution time	Memory
196982		Basilhijaz	Arranging Shoes (IOI19_shoes)	C++14	0 / 100	1026 ms	3576 KiB

shoes

#include "shoes.h"
#include <bits/stdc++.h>
using namespace std;
long long count_swaps(std::vector<int> s) {
    int cnt = 0; long long swaps = 0;
    vector <int> a(s.size());
    for(int i = 0; i < s.size(); i++){
        if(s[i] < 0){
            swaps += abs(i - (cnt * 2));
            a[cnt*2] = s[i];
            cnt++;
        }
    }
    cnt = 0;
    for(int i = s.size() - 1; i>=0; i--){
        if(s[i]<0){
            cnt++;
        }
        else if(i >= s.size() - (cnt*2) - 2){
            s[i+cnt] = s[i];
            s[i] = 0;
        }
    }
    for(int i = 0; i < s.size(); i++){
        if(s[i] > 0){
            for(int j = 0; j < s.size(); j+=2){
                if(a[j] == s[i]*-1){
                    swaps += abs((j+1) - i);
                }
            }
        }
    }
	return swaps;
}

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:7:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 0; i < s.size(); i++){
                    ~~^~~~~~~~~~
shoes.cpp:19:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
         else if(i >= s.size() - (cnt*2) - 2){
                 ~~^~~~~~~~~~~~~~~~~~~~~~~~~
shoes.cpp:24:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 0; i < s.size(); i++){
                    ~~^~~~~~~~~~
shoes.cpp:26:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for(int j = 0; j < s.size(); j+=2){
                            ~~^~~~~~~~~~

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