제출 #1197814

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1197814		primo	medians (balkan11_medians)	C++20	15 / 100	59 ms	11844 KiB

medians

#include <bits/stdc++.h>
#define int long long

using namespace std;

int32_t main() {
    ios_base::sync_with_stdio(0);
    cin.tie(nullptr);
    
    int n;
    cin >> n;
    
    vector<int> b(n);
    for (int i = 0; i < n; ++i) {
        cin >> b[i];
    }

    set<int> st;
    for (int i = 1; i <= 2 * n - 1; ++i) {
        st.insert(i);
    }

    vector<int> a;
    a.push_back(b[0]);
    st.erase(b[0]);

    for (int i = 1; i < n; ++i) {
        if (b[i - 1] == b[i]) {
            a.push_back(*st.begin());
            a.push_back(*st.rbegin());
            st.erase(st.begin());
            st.erase(--st.end());
        } else if (b[i - 1] < b[i]) {
            if (st.count(b[i])) {
                a.push_back(b[i]);
                st.erase(b[i]);
                a.push_back(*st.rbegin());
                st.erase(--st.end());
            } else {
                a.push_back(*st.begin());
                st.erase(st.begin());
                a.push_back(*st.begin());
                st.erase(st.begin());
            }
        } else {
            if (st.count(b[i])) {
                a.push_back(b[i]);
                st.erase(b[i]);
                a.push_back(*st.begin());
                st.erase(st.begin());
            } else {
                a.push_back(*st.rbegin());
                st.erase(--st.end());
                a.push_back(*st.rbegin());
                st.erase(--st.end());
            }
        }
    }

    for (auto& u: a) {
        cout << u << " ";
    }

    return 0;
}

• Subtask 1: 15 / 65
• Subtask 2: 0 / 35