Submission #1037059

#	Time	Username	Problem	Language	Result	Execution time	Memory
1037059		em4ma2	Arranging Shoes (IOI19_shoes)	C++14	25 / 100	16 ms	3264 KiB

shoes

//                          بسم الله الرحمن الرحيم
#include "bits/stdc++.h"

using namespace std;

#define ll long long
//#define int long long
#define pb push_back
#define pob pop_back
//#define pb push
#define endl '\n'
#define ld long double
/*#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops,avx,avx2,ssse3,tune-native")*/
#define applejuice ios::sync_with_stdio(false);cin.tie(nullptr);cout.tie(nullptr);

const ll mod=1e9+7;
const ll inf=1e18;
const ll mxsz=204;
const ld pi=acos(-1.0);

ll count_swaps(vector<int>s){
    int n=s.size()/2;
    /*cout<<n<<endl;
    for (auto x:s)cout<<x<<" ";*/
    if (n==1){
        if (s[0]<0)return 0;
        else return 1;
    }
    return (ll)n*(n-1)/2;
}
/*4
-2 -1 -3 -2 2 1 3 2*/
/*
signed main(){
    applejuice;

    int n;
    cin>>n;
    vector<int>a(2*n);
    for (int i=0;i<2*n-1;i++){
        cin>>a[i];
    }
    cout<<count_swaps(a)<<endl;

    return 0;
}*/

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