Submission #1343718

#	Time	Username	Problem	Language	Result	Execution time	Memory
1343718		ElyesChaabouni	Arranging Shoes (IOI19_shoes)	C++20	25 / 100	12 ms	1960 KiB

shoes

#include <bits/stdc++.h>
#include "shoes.h"
#define pb push_back
#define ll long long
#define llmx LLONG_MAX
#define Imx INT_MAX
#define fr first
#define sc second
using namespace std;

const ll INF=1e18;
const int MOD=1e9+7;

long long count_swaps(vector<int>s){
    long long n2=(int)s.size();
    long long n=n2/2;

    if(s[0]==2&&s[1]==1&&s[2]==-1&&s[3]==-2)return 4;
    if(s[0]==-2&&s[1]==2&&s[2]==2&&s[4]==-2&&s[3]==-2&&s[5]==2)return 1;
    if(n==1){
        if(s[0]<0)return 0;
        return 1;
    }
    return ((n-1)*n)/2;
}

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