Submission #1313017

#	Time	Username	Problem	Language	Result	Execution time	Memory
1313017		huoi	Global Warming (CEOI18_glo)	C++17	28 / 100	2096 ms	12744 KiB

glo

#include <bits/stdc++.h>
using namespace std;

#define int long long
#define INF 1e18

void solve() {
    int n, x;
    cin >> n >> x;

    vector<int> a(n);
    for (int i = 0; i < n; i++) {
        cin >> a[i];
    }

    vector<vector<int>> dp(n, vector<int>(2, 1));
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < i; j++) {
            if (a[j] < a[i]) {
                dp[i][0] = max(dp[i][0], dp[j][0] + 1);
                dp[i][1] = max(dp[i][1], dp[j][1] + 1);
            }
            if (a[j] - x < a[i]) {
                dp[i][0] = max(dp[i][0], dp[j][1] + 1);
            }
        }
    }

    int ans = 1;
    for (int i = 0; i < n; i++) {
        ans = max(ans, max(dp[i][0], dp[i][1]));
    }
    cout << ans;
}

int32_t main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    solve();
    return 0;
}

• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 13 / 13
• Subtask 4: 0 / 10
• Subtask 5: 0 / 20
• Subtask 6: 0 / 17
• Subtask 7: 0 / 25