Submission #1189452

#	Time	Username	Problem	Language	Result	Execution time	Memory
1189452		prideliqueee	Bouquet (EGOI24_bouquet)	C++20	24 / 100	30 ms	5104 KiB

Main

#include<bits/stdc++.h>
using namespace std;
#define int long long
signed main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n;
    cin>>n;
    int li[n+1],lj[n+1],ri[n+1];
    for(int i=1;i<=n;i++)
    {
        int l,r;
        cin>>l>>r;
        li[i]=max((int)0,i-l-1);
        ri[i]=min(n+1,i+r+1);
        //ตั้งแต่ i+1 -> min(n,i+r)=min(อันเดิม,i)
        int j=li[i];
        while(j!=0&&ri[j]>i)
        {
            j=li[j];
        }
        li[i]=j;
    }
    int ans[n+1];
    memset(ans,0,sizeof ans);
    for(int i=1;i<=n;i++)
    {
        ans[i]=ans[i-1];
        int d=li[i];
        //cout<<li[i]<<" "<<ri[i]<<" ";
        ans[i]=max(ans[i],ans[d]+1);
        //cout<<ans[i]<<endl;
    }
    cout<<ans[n];
}

• Subtask 1: 8 / 8
• Subtask 2: 16 / 16
• Subtask 3: 0 / 28
• Subtask 4: 0 / 18
• Subtask 5: 0 / 30