Submission #1147188

#	Time	Username	Problem	Language	Result	Execution time	Memory
1147188		Newtonabc	Rabbit Carrot (LMIO19_triusis)	C++20	100 / 100	16 ms	2244 KiB

triusis

#include<bits/stdc++.h>
using namespace std;
const int N=2e5+10;
vector<int> v;
int a[N];
int main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n,m;
    cin>>n >>m;
    for(int i=1;i<=n;i++) cin>>a[i];
    for(int i=1;i<=n;i++){
        int tmp=a[i]-m*i;
        if(tmp>0) continue;
        if(v.empty()){
            v.push_back(tmp);
            continue;
        }
        if(tmp<=v.back()){
            v.push_back(tmp);
            continue;
        }
        int l=0,r=v.size()-1;
        while(l<r){
            int mid=(l+r)/2;
            if(v[mid]<tmp) r=mid;
            else l=mid+1;
        }
        v[l]=tmp;
    }
    cout<<n-v.size();
}

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