Submission #1120106

#	Time	Username	Problem	Language	Result	Execution time	Memory
1120106		ezzzay	Bouquet (EGOI24_bouquet)	C++14	46 / 100	3100 ms	9048 KiB

Main

#include<bits/stdc++.h>
using namespace std;
#define itn long long
#define int long long
#define ff first
#define ss second
#define pb push_back
const int N=3e5+5;
int l[N],r[N];
int dp[N];
int p[N];
int n;
void fun(){
     int ans=0;
    for(int i=1;i<=n;i++){
        dp[i]=1;
        for(int j=max(0LL,i-2);j<i;j++){
            if(r[j]+j>=i)continue;
            if(i-l[i]<=j)continue;
            dp[i]=max(dp[i],dp[j]+1);
        }
        if(i-3>=0){
            dp[i]=max(dp[i],p[i-3]+1);
        }
        
        ans=max(ans,dp[i]);
        p[i]=max(dp[i],p[i-1]);
        
    }
    
    cout<<ans;
}
signed main(){
    cin>>n;
    bool u=0;
    for(int i=1;i<=n;i++){
        cin>>l[i]>>r[i];
        if(l[i]>2 or r[i]>2)u=1;
    }
    if(u==1){
        int ans=0;
    for(int i=1;i<=n;i++){
        dp[i]=1;
        for(int j=0;j<i;j++){
            if(r[j]+j>=i)continue;
            if(i-l[i]<=j)continue;
            dp[i]=max(dp[i],dp[j]+1);
        }
        ans=max(ans,dp[i]);
    }
    
    cout<<ans;
    return 0;
    }
    if(u==0){
        fun();
        return 0;
    }
    
    
    
}

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