제출 #1349132

#제출 시각아이디문제언어결과실행 시간메모리
1349132novemnotesRabbit Carrot (LMIO19_triusis)C++20
0 / 100
1 ms580 KiB
#include <bits/stdc++.h>
using namespace std;

#define int long long
const int N(2e5+9);

int n,k,ans=0;
int v[N];
vector<int> lis;

int32_t main(){
	ios_base::sync_with_stdio(false);cin.tie(NULL);
	cin >> n >> k;
	for(int i=1;i<=n;i++){
		cin >> v[i];
		v[i] = v[i]-(k*i);
	}
	for(int i=n;i>=1;i--){
		auto it = upper_bound(lis.begin(),lis.end(),v[i]);
		if(it==lis.end())lis.emplace_back(v[i]);
		else *it = v[i];
	}
	if(v[1]<=k)cout << n-lis.size() << "\n";
	else cout << lis.size() << "\n";
	return 0;
}
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