Submission #499578

#	Time	Username	Problem	Language	Result	Execution time	Memory
499578		colossal_pepe	medians (balkan11_medians)	C++17	100 / 100	25 ms	3024 KiB

medians

#include <iostream>
#include <vector>
using namespace std;

#define upd while(mark[left]) left++; while(mark[right]) right--

int n, b[100005];
bool mark[2 * 100005];
vector<int> ans;

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cin >> n;
    for (int i = 0; i < n; i++) {
        cin >> b[i];
    }
    mark[0] = mark[2 * n] = 1;
    int left = 0, right = 2 * n;
    ans.push_back(b[0]);
    mark[b[0]] = 1;
    for (int i = 1; i < n; i++) {
        upd;
        if (b[i - 1] < b[i]) {
            ans.push_back(right);
            mark[right] = 1;
            if (mark[b[i]]) {
                upd;
                ans.push_back(right);
                mark[right] = 1;
            } else {
                ans.push_back(b[i]);
                mark[b[i]] = 1;
            }
        } else if (b[i - 1] > b[i]) {
            ans.push_back(left);
            mark[left] = 1;
            if (mark[b[i]]) {
                upd;
                ans.push_back(left);
                mark[left] = 1;
            } else {
                ans.push_back(b[i]);
                mark[b[i]] = 1;
            }
        } else {
            ans.push_back(left), ans.push_back(right);
            mark[left] = mark[right] = 1;
        }
    }
    for (int i : ans) {
        cout << i << ' ';
    }
    cout << endl;
    return 0;
}

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