Submission #1033726

#	Time	Username	Problem	Language	Result	Execution time	Memory
1033726		ender	Arranging Shoes (IOI19_shoes)	C++17	0 / 100	0 ms	348 KiB

shoes

#include "shoes.h"
#include <bits/stdc++.h>
 
using namespace std;
 
long long count_swaps(std::vector<int> s) {

	vector<bool> visited(s.size(), false);
	vector<int> ns(s.size()); // new s
	int pos = 1;
	for(int i = 0; i < s.size(); ++i){

		if(visited[i]) continue;

		int goal = -s[i];

		for(int j = i+1; j < s.size(); ++j){

			if(visited[j]) continue;

			if(s[j] == goal){

				if(s[j] > 0){
					ns[j] = pos;
					ns[i] = -pos;

				} else {
					ns[j] = -pos;
					ns[i] = pos;

				}
				visited[i] = true;
				visited[j] = true;
				pos++;
				break;


			}

		}

	}

	for(const auto &i : ns) cout << i << " ";
	cout << "\n";
 
	return 0;

}

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:11:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   11 |  for(int i = 0; i < s.size(); ++i){
      |                 ~~^~~~~~~~~~
shoes.cpp:17:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |   for(int j = i+1; j < s.size(); ++j){
      |                    ~~^~~~~~~~~~

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