Submission #428070

#	Time	Username	Problem	Language	Result	Execution time	Memory
428070		A_D	Arranging Shoes (IOI19_shoes)	C++14	45 / 100	33 ms	1868 KiB

shoes

#include "shoes.h"
#include <bits/stdc++.h>
using namespace std;
long long count_swaps(std::vector<int> s) {
    long long ans=0,cnt=0;
    for(int i=0;i<s.size();i++){
        if(s[i]<0){
            ans+=abs(i-cnt);
            cnt+=2;
        }
    }
    return ans;
    if(s.size()==2)return s[0]>s[1];
	long long n=s.size();
	n/=2;
	return n*(n-1)/2;
}

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:6:18: 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++){
      |                 ~^~~~~~~~~

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