Submission #171606

#	Time	Username	Problem	Language	Result	Execution time	Memory
171606		losmi247	Arranging Shoes (IOI19_shoes)	C++14	50 / 100	35 ms	6648 KiB

shoes

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int N = 1e5+45;

ll n,a[N];

ll count_swaps(vector <int> S){
    n = S.size();
    for(int i = 1; i <= n; i++){
        a[i] = S[i-1];
    }
    ll sol = 0;
    for(int i = 1; i <= n; i += 2){
        ll poz = 0;
        for(int j = i+1; j <= n; j++){
            if(a[i]+a[j] == 0){
                poz = j;
                break;
            }
        }
        for(int j = poz-1; j > i; j--){
            swap(a[j],a[j+1]);
            sol++;
        }
        if(a[i] > 0){
            swap(a[i],a[i+1]);
            sol++;
        }
    }
    return sol;
}

/*int main(){
    vector <int> v = {-2, 2, 2, -2, -2, 2};
    cout << count_swaps(v) << endl;
}*/

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