Submission #303307

#	Time	Username	Problem	Language	Result	Execution time	Memory
303307		IWANTTOGETGOLDINIOI	Arranging Shoes (IOI19_shoes)	C++14	45 / 100	47 ms	1920 KiB

shoes

#include <bits/stdc++.h>
#include "shoes.h"

using namespace std;

long long count_swaps(vector <int> s) {
	int n=s.size()/2;
	if(n==1) {
		if(s[0]<s[1]) {
			return 0;
		}	
		return 1;
	}
	long long ans=0,d=0;
	for (int i=0;i<s.size();i++){
		if(s[i]<0){
			ans+=abs(i-d);
			d+=2;
		}
	}
	return ans;
}	

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:15:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |  for (int i=0;i<s.size();i++){
      |               ~^~~~~~~~~

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