Submission #590503

#	Time	Username	Problem	Language	Result	Execution time	Memory
590503		lam	Rabbit Carrot (LMIO19_triusis)	C++14	100 / 100	30 ms	5380 KiB

triusis

#include <bits/stdc++.h>
#define taskname "cowjog"
#define maxn 200010
#define ff first
#define ss second
#define int long long
using namespace std;
int n,T;
int a[maxn],dp[maxn];
int ans=0;
signed main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr); cout.tie(nullptr);
   // freopen(taskname".in","r",stdin);
   // freopen(taskname".out","w",stdout);
    cin>>n>>T;
    a[0]=0;
    for (int i=1; i<=n; i++)
    {
        int x; cin>>x;
        a[i]=x-i*T; a[i]=-a[i];
    }
    fill_n(dp,n+1,2*1e18);
    dp[0]=0;
    for (int i=1; i<=n; i++)
    {
        int j=upper_bound(dp,dp+n+1,a[i])-dp;
        if (j==0) continue;
        ans=max(ans,j);
        dp[j]=a[i];
    }
    cout<<n-ans;
}

• Subtask 1: 14 / 14
• Subtask 2: 21 / 21
• Subtask 3: 28 / 28
• Subtask 4: 37 / 37