Submission #483540

#	Time	Username	Problem	Language	Result	Execution time	Memory
483540		zwicky	Rabbit Carrot (LMIO19_triusis)	C++14	0 / 100	0 ms	204 KiB

triusis

#include<bits/stdc++.h>
#define ll long long
#define pb push_back
#define nl endl
#define loop(i,a,b) for(ll i=a;i<b;i++) 
#define rloop(i,a,b) for(ll i=b;i>=a;i--)
#define cy cout<<"YES"<<endl;
#define cn cout<<"NO"<<endl;
#define cm cout<<-1<<endl
#define vl vector<ll>
#define vchar vector<char>
#define vvll vector<vector<ll>>
#define vvcr vector<vchar>
#define deb(x) cout<<#x<<" "<<x<<endl;
#define all(x) (x).begin(), (x).end()
#define sz(x) ((ll)(x).size())
using namespace std;

const ll MOD=1e9+7;

ll binepow(ll a,ll b,ll mod=-1){
	if(b==0){
		return 1ll;
	}
	if(mod!=-1){
		ll k=binepow(a,b/2,mod);
		if(b%2==0){
			return (k*k)%mod;
		}
		else{
			return (((k*a)%mod)*k)%mod;
		}
	}
	else{
		ll k=binepow(a,b/2,mod);
		if(b%2==0){
			return (k*k);
		}
		else{
			return k*k*a;
		}
	}
}

////////////////////////////////////////////////////////

void solve(){
	ll n,m;
	cin>>n>>m;
	vl a(n+1);
	loop(i,1,n+1){
		cin>>a[i];
	}
	a[0]=-(n+1)*m;
	vl big(n+1,0);
	ll tot=0;
	loop(i,1,n+1){
		ll lo=1;ll hi=n;
		ll k=1;
		while(lo<=hi){
			ll mid=(lo+hi)/2;
			if(a[big[mid]]+m*(i-big[mid])>=a[i]){
				k=max(mid+1,k);
				lo=mid+1;
			}
			else{
				hi=mid-1;
			}
		}
		// deb(k)
		if(k!=1){
			if(a[big[k]]+m*(i-big[k])<a[i]){
				big[k]=i;
			}
			tot=max(tot,k);
		}
		else if(k==1 && a[i]<=(i*m)){
			if(a[big[k]]+m*(i-big[k])<a[i]){
				big[k]=i;
			}
			tot=max(tot,k);
		}
	}
	cout<<n-tot<<endl;
	return;
}

int main(){
   ios::sync_with_stdio(0);
   cin.tie(0);
   //freopen(".in","r",stdin);
   //freopen(".out","w",stdout);
	// ll t;
	//  cin>>t;
	// while(t--){
	// 	 solve();
	// }
	solve();
}

• Subtask 1: 0 / 14
• Subtask 2: 0 / 21
• Subtask 3: 0 / 28
• Subtask 4: 0 / 37