Submission #789836

#	Time	Username	Problem	Language	Result	Execution time	Memory
789836		ezzzay	Arranging Shoes (IOI19_shoes)	C++14	10 / 100	1 ms	300 KiB

shoes

#include "shoes.h"
#include<bits/stdc++.h>
using namespace std;
long long count_swaps(vector<int> s) {
	long long k=0;
	for(int i=0;i<s.size();i+=2){
	    //tuhain index dr bhgu bol 
	    if(s[i]>0){
	        int j;
	        for(j=i+1;j<s.size();j++){
	            if(s[j]<0)break;
	        }
	        swap(s[i],s[j]);
	        k+=j-i;
	    }
	}
	long long m=k;
	k=0;
	for(int i=s.size()-2;i>=0;i-=2){
	    //tuhain index dr bhgu bol 
	    if(s[i]>0){
	        int j;
	        for(j=i-1;j>=0;j--){
	            if(s[j]<0)break;
	        }
	        swap(s[i],s[j]);
	        k+=j-i;
	    }
	}
	return max(m,k);
}

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:6:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    6 |  for(int i=0;i<s.size();i+=2){
      |              ~^~~~~~~~~
shoes.cpp:10:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   10 |          for(j=i+1;j<s.size();j++){
      |                    ~^~~~~~~~~

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