Submission #866512

#	Time	Username	Problem	Language	Result	Execution time	Memory
866512		12345678	Global Warming (CEOI18_glo)	C++17	28 / 100	2035 ms	1884 KiB

glo

#include <bits/stdc++.h>

using namespace std;

const int nx=2e5+5;
int n, d, dp[nx], ans;

int main()
{
    cin.tie(NULL)->sync_with_stdio(false);
    cin>>n>>d;
    vector<int> v(n), t;
    for (auto &x:v) cin>>x;
    for (int i=n-1; i>=0; i--)
    {
        auto itr=lower_bound(t.begin(), t.end(), -v[i]);
        dp[i]=itr-t.begin()+1;
        if (itr==t.end()) t.push_back(-v[i]);
        else *itr=-v[i];
    }
    t.clear();
    for (int i=0; i<n; i++)
    {
        auto itr=lower_bound(t.begin(), t.end(), v[i]);
        for (int j=i+1; j<n; j++) if (v[j]+d>v[i]) ans=max(ans, (int)(itr-t.begin())+1+dp[j]);
        if (itr==t.end()) t.push_back(v[i]);
        else *itr=v[i];
    }
    cout<<ans;
}

• 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