Submission #866072

#	Time	Username	Problem	Language	Result	Execution time	Memory
866072		Blagoj	medians (balkan11_medians)	C++17	10 / 100	70 ms	12160 KiB

medians

#include <bits/stdc++.h>

using namespace std;

#define endl '\n'
#define ll long long
#define all(x) x.begin(), x.end()

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    int n;
    cin >> n;
    set<int> notUsed;
    for (int i = 1; i <= n * 2 - 1; i++) notUsed.insert(i);
    vector<int> ans, a(n);
    for (int i = 0; i < n; i++) cin >> a[i];
    ans.push_back(a[0]);
    notUsed.erase(a[0]);
    for (int i = 1; i < n; i++) {
        if (notUsed.count(a[i])) {
            notUsed.erase(a[i]);
            ans.push_back(a[i]);
            int x = *notUsed.rbegin();
            ans.push_back(x);
            notUsed.erase(x);
        }
        else {
            int x1 = *notUsed.begin(), x2 = *notUsed.rbegin(); 
            ans.push_back(x1);
            ans.push_back(x2);
            notUsed.erase(x1);
            notUsed.erase(x2);
        }
    }
    for (auto x : ans) cout << x << " ";
}

• Subtask 1: 10 / 65
• Subtask 2: 0 / 35