Submission #1033735

#	Time	Username	Problem	Language	Result	Execution time	Memory
1033735		ender	Arranging Shoes (IOI19_shoes)	C++17	50 / 100	1095 ms	3292 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){
 
		if(s[i] < 0){ 
 
			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;
 
				}
 
			}
 
		}else { // debe ser zapato derecho

			int target = -s[i];
 
			for(int j = i+1; j < s.size(); ++j){
 
				if(s[j] == target){
 
					for(int k = j; k > i; --k){
 
						swap(s[k], s[k-1]);
						ans++;
 
					}
 
					break;
 
				}
 
			}
 
 
		}
 
	}
	return ans;
}

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:10:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   10 |  for(int i = 0; i < s.size(); i += 2){
      |                 ~~^~~~~~~~~~
shoes.cpp:14:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   14 |    for(int j = i+1; j < s.size(); ++j){
      |                     ~~^~~~~~~~~~
shoes.cpp:35:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   35 |    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