Submission #424921

#	Time	Username	Problem	Language	Result	Execution time	Memory
424921		Apiram	Arranging Shoes (IOI19_shoes)	C++14	10 / 100	1077 ms	70068 KiB

shoes

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

long long count_swaps(std::vector<int> s) {
	int n = s.size()/2;
	vector<deque<int>>adj(n+1);
	vector<int>neg;
	int64_t score=0;
	for (int i =0;i<s.size();++i){
		if (s[i]<0)neg.push_back(i);
		else{
			adj[s[i]].push_back(i);
		}
	}
	
	for (int i =0,j=0;i<neg.size();++i,j+=2){
	int64_t temp = neg[i]-j;
	for (int k =0;k<=n;++k){
		for (int l =0;l<adj[k].size();++l){
			if (adj[k][l]<neg[i]){
				adj[k][l]++;
			}
		}
	}
	int64_t temp2 = adj[abs(s[neg[i]])][0];
	
	for (int k =0;k<=n;++k){
		for (int l =0;l<adj[k].size();++l){
			if (adj[k][l]<temp2){
				adj[k][l]++;
			}
		}
	}
	adj[abs(s[neg[i]])].pop_front();
	for (int k =i+1;k<neg.size();++k){
		if (neg[k]<temp2)neg[k]++;
	}
	temp2 = temp2 - j - 1;
	
	score+=temp2+temp;
	}
	return score;
}

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:10:17: 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){
      |                ~^~~~~~~~~
shoes.cpp:17:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   17 |  for (int i =0,j=0;i<neg.size();++i,j+=2){
      |                    ~^~~~~~~~~~~
shoes.cpp:20:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::deque<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   20 |   for (int l =0;l<adj[k].size();++l){
      |                 ~^~~~~~~~~~~~~~
shoes.cpp:29:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::deque<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   29 |   for (int l =0;l<adj[k].size();++l){
      |                 ~^~~~~~~~~~~~~~
shoes.cpp:36:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   36 |  for (int k =i+1;k<neg.size();++k){
      |                  ~^~~~~~~~~~~

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