Submission #1057899

#	Time	Username	Problem	Language	Result	Execution time	Memory
1057899		Malix	Global Warming (CEOI18_glo)	C++14	0 / 100	46 ms	5468 KiB

glo

#include <bits/stdc++.h>
using namespace std;
 
typedef long long ll;
typedef vector<int> vi;
typedef vector<vi> vii;
typedef pair<int,int> pi;
typedef vector<pi> pii;
typedef tuple<int,int,int> tii;
typedef vector<ll> li;
typedef vector<li> lii;
 
#define REP(i,a,b) for(int i=a;i<b;i++)
#define F first
#define S second
#define PB push_back
#define MP make_pair
#define LSOne(s) ((s)&(-s))
 
ll INF=1e18+10;
int inf=1e9+10;
ll M=1e9+7;

int main() {   
// ios::sync_with_stdio(0);
// cin.tie(0);
    int n,m;cin>>n>>m;
    vi a(n),b,p(n);
    REP(i,0,n)cin>>a[i];
    REP(i,0,n)a[i]=-a[i];
    b.PB(a[0]);p[0]=0;
    REP(i,1,n){
        auto it2=lower_bound(b.begin(),b.end(),a[i]+m);
        p[i]=it2-b.begin()-1;
        auto it=upper_bound(b.begin(),b.end(),a[i]);
        if(it==b.end()){
            b.PB(a[i]);
            continue;
        }
        int pos=it-b.begin();
        pos--;
        b[pos]=a[i];
    }
    reverse(a.begin(),a.end());
    REP(i,0,n)a[i]=-a[i];
    reverse(p.begin(),p.end());
    b.clear();
    b.PB(a[0]);
    int k=b.size();
    int ans=k+p[0];
    REP(i,0,n){
        auto it=upper_bound(b.begin(),b.end(),a[i]);
        if(it==b.end()){
            b.PB(a[i]);k++;
            ans=max(ans,p[i]+k);
            continue;
        }
        int pos=it-b.begin();
        pos--;
        b[pos]=a[i];
        ans=max(ans,p[i]+k);
    }
    cout<<ans;
}

• 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