Submission #785549

#	Time	Username	Problem	Language	Result	Execution time	Memory
785549		kebine	Global Warming (CEOI18_glo)	C++17	0 / 100	2078 ms	2260 KiB

glo

#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
#define fi first
#define se second

ll n,x;
// int lis[200005][200005];   // prev, cur

ll cek(vector<int> x){
    ll tmp[n+5];
    ll ans=1;
    for(int i=n;i>0;i--){
        tmp[i]=1;
        for(int j=i+1;j<=n;j++){
            if(x[j]>x[i]) tmp[i] = max(tmp[j]+1, tmp[i]);
        }
        ans=max(ans,tmp[i]);
    }
    return ans;
}

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);

    cin>>n>>x;
    vector<int> a(n+1);
    ll ans=1;
    for(int i=1;i<=n;i++){
        cin>>a[i];
    }

    for(int i=1;i<=n;i++){// pilih segmen
        for(int j=i;j<=n;j++){
            for(int k=-1*x;k<x;k++){
                // cout<<i<<' '<<j<<"//";
                vector<int> tmp = a;
                for(int l=i; l<=j; l++){
                    tmp[l] += k;
                }
                // for(int l=1;l<=n;l++) cout<<tmp[l]<<' ';
                // cout<<":: ";
                // cout<<cek(tmp)<<'\n';
                ans = max(cek(tmp),ans);
            }
        }
    }

    cout<<ans<<'\n';

    return 0;
}

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