Submission #990881

#	Time	Username	Problem	Language	Result	Execution time	Memory
990881		tincamatei	Stone Arranging 2 (JOI23_ho_t1)	C++14	100 / 100	143 ms	14528 KiB

Main

#include <bits/stdc++.h>

int main() {
  	std::cin.tie(NULL);
    std::iostream::sync_with_stdio(false);
  
    int N;

    std::map<int, int> last_pos;

    std::vector<std::pair<int, int>> st;

    std::cin >> N;

    for (int i = 1; i <= N; i++) {
        int val;
        std::cin >> val;

        int last = i;

        if (last_pos[val] != 0)
            last = last_pos[val];

        while (!st.empty() && st.back().first >= last) {
            last_pos[st.back().second] = 0;
            st.pop_back();
        }
        st.push_back({last, val});
        last_pos[val] = i;
    }

    std::vector<int> res(1 + N);

    int last = N;
    for (int t = (int)st.size() - 1; t >= 0; t--) {
        auto [first, val] = st[t];

        while (last >= first) {
            res[last] = val;
            last--;
        }
    }

    for (int i = 1; i <= N; i++)
        std::cout << res[i] << "\n";

    return 0;
}

Compilation message (stderr)

Main.cpp: In function 'int main()':
Main.cpp:36:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   36 |         auto [first, val] = st[t];
      |              ^

• Subtask 1: 25 / 25
• Subtask 2: 35 / 35
• Subtask 3: 40 / 40