Submission #1152695

#	Time	Username	Problem	Language	Result	Execution time	Memory
1152695		ezzzay	Global Warming (CEOI18_glo)	C++20	15 / 100	2095 ms	512 KiB

glo

#include<bits/stdc++.h>
using namespace std;
#define int long long
#define ff first
#define ss second
#define pb push_back
#define double long double
const int N=5005;
int a[N];
int n;
int fun(int l, int r, int x){
    int dp[N];
    for(int i=0;i<N;i++){
        dp[i]=0;
    }
    int b[N];
    for(int i=1;i<=n;i++){
        if(l<=i and i<=r)b[i]=a[i]-x;
        else b[i]=a[i];
    }
    int s=0;
    for(int i=1;i<=n;i++)dp[i]=1;
    for(int i=2;i<=n;i++){
        for(int j=i-1;j>=1;j--){
            if(b[i]>b[j])dp[i]=max(dp[i],dp[j]+1);
            s=max(s,dp[i]);
        }
    }
    return s;
}
signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int x;
    cin>>n>>x;
    for(int i=1;i<=n;i++){
        cin>>a[i];
    }
    int ans=0;
    for(int l=1;l<=n;l++){
        for(int r=l+1;r<=n;r++){
            for(int p= -x;p<=x;p++){
                ans=max(ans,fun(l,r,p));
            }
        }
    }
    cout<<ans;
}

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