Submission #1204050

#	Time	Username	Problem	Language	Result	Execution time	Memory
1204050		arkanefury	Arranging Shoes (IOI19_shoes)	C++20	0 / 100	0 ms	324 KiB

shoes

#include "shoes.h"
using namespace std;
const int N = 2e5+5;
int a[N], b[N];
long long count_swaps(vector <int> v){
    int n = v.size();
    for(int i = 0; i < n; i ++){
        if(v[i] > 0)a[v[i]] = i;
        else b[v[i] * -1] = i;
    }
    int ans = 0, x = 0;
    for(int i = 1; i <= n/2; i ++){
        ans += abs(a[i] - x) + abs(b[i] - x - 1);
        x += 2;
    }
    return ans;
}

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