Submission #301015

#	Time	Username	Problem	Language	Result	Execution time	Memory
301015		kaplanbar	Zalmoxis (BOI18_zalmoxis)	C++14	100 / 100	888 ms	19660 KiB

zalmoxis

#include <bits/stdc++.h>
using namespace std;
using ll = long long;
constexpr int N = 1e6 + 5;
struct Element {
    int x, l, r;
    bool operator<(Element other) const {
        if(x == other.x) {
            return l > other.l;
        }
        return x > other.x;
    }
};
struct Ans {
    int x, l, t;
    bool operator<(Ans other) const {
        if(l == other.l) {
            return t < other.t;
        }
        return l < other.l;
    }
};
int n, k;
priority_queue<Element> q;
int main() {
    ios_base::sync_with_stdio(false);
    cin >> n >> k;
    vector<int> a(n);
    for(int i = 0; i < n; i++) {
        cin >> a[i];
        q.push((Element){a[i], i, i});
    }
    int total = k;
    vector<Ans> ans;
    int tim = 0;
    while(1) {
        if(q.top().x == 30) break;
        int mn = q.top().x;
        pair<int,int> le = make_pair(q.top().l, q.top().r);
        q.pop();
        if(mn == q.top().x && le.second == q.top().l - 1) {
            auto val = (Element){mn + 1, le.first, q.top().r};
            q.pop();
            q.push(val);
        }
        else {
            ans.push_back((Ans){mn, le.second + 1, tim++});
            total--;
            q.push((Element){mn + 1, le.first, le.second});
        }
    }
    sort(ans.begin(), ans.end());
    int ptr = 0;
    for(int i = 0; i <= n; i++) {
        if(ptr < (int)ans.size()) {
            int end = ptr;
            // Reverse the stack to process in correct order
            while(end < (int)ans.size() && ans[end].l == i) {
                end++;
            }
            stack<int> s;
            for(int j = end - 1; j >= ptr; j--) {
                s.push(ans[j].x);
            }
            ptr = end;
            while(s.size()) {
                while(total > 0 && s.top() > 0) {
                    total--;
                    int x  = s.top();
                    s.pop();
                    s.push(x - 1);
                    s.push(x - 1);
                }
                cout << s.top() << " ";
                s.pop();
            }
        }
        if(i != n) cout << a[i] << " ";
    }
    return 0;
}

• Subtask 1: 30 / 30
• Subtask 2: 70 / 70