Submission #916134

#	Time	Username	Problem	Language	Result	Execution time	Memory
916134		Aiperiii	Arranging Shoes (IOI19_shoes)	C++14	30 / 100	22 ms	4972 KiB

shoes

#include <bits/stdc++.h>
#include "shoes.h"
using namespace std;
#define all(x) x.begin(),x.end()
#define ff first
#define ss second
#define pb push_back
long long count_swaps(vector<int> s) {
    int x=abs(s[0]);
    vector <long long> v1,v2;
    for(int i=0;i<s.size();i++){
       if(i%2==0 && s[i]==x)v1.pb(i);
       if(i%2==1 && s[i]==-x)v2.pb(i);
    }
    long long ans=0;
    for(int i=0;i<v1.size();i++){
       ans+=abs(v1[i]-v2[i]);
    }
   return ans;
}

Compilation message (stderr)

shoes.cpp: In function 'long long int count_swaps(std::vector<int>)':
shoes.cpp:11:18: 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:16:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |     for(int i=0;i<v1.size();i++){
      |                 ~^~~~~~~~~~

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