Submission #805650

#	Time	Username	Problem	Language	Result	Execution time	Memory
805650		myst6	Financial Report (JOI21_financial)	C++14	60 / 100	4051 ms	7540 KiB

Main

#include <bits/stdc++.h>

using namespace std;

int main() {
    cin.tie(0)->sync_with_stdio(0);
    int n, d;
    cin >> n >> d;
    vector<int> A(n);
    for (int i=0; i<n; i++) cin >> A[i];
    if (d == 1) {
        stack<int> s;
        int ans = 0;
        for (int i=n-1; i>=0; i--) {
            while (!s.empty() && s.top() <= A[i]) s.pop();
            s.push(A[i]);
            ans = max(ans, (int)s.size());
        }
        cout << ans << "\n";
    } else {
        vector<int> dp(n,1);
        int ans = 0;
        for (int i=0; i<n; i++) {
            vector<int> minpath(n);
            multiset<int> path;
            for (int j=max(0,i-d); j<i; j++) {
                if (A[j] < A[i]) dp[i] = max(dp[i], dp[j]+1);
                if (A[j] == A[i]) dp[i] = max(dp[i], dp[j]);
                minpath[j] = A[j];
                path.insert(A[j]);
            }
            for (int j=i-d-1; j>=0; j--) {
                minpath[j] = max(*path.begin(), A[j]);
                if (A[j] >= minpath[j]) {
                    if (A[j] < A[i]) dp[i] = max(dp[i], dp[j]+1);
                    if (A[j] == A[i]) dp[i] = max(dp[i], dp[j]);
                }
                path.erase(path.find(minpath[j+d]));
                path.insert(minpath[j]);
            }
            ans = max(ans, dp[i]);
        }
        cout << ans << "\n";
    }
    return 0;
}

• Subtask 1: 14 / 14
• Subtask 2: 14 / 14
• Subtask 3: 20 / 20
• Subtask 4: 12 / 12
• Subtask 5: 0 / 5
• Subtask 6: 0 / 35