Submission #405634

#	Time	Username	Problem	Language	Result	Execution time	Memory
405634		Fidisk	Arcade (NOI20_arcade)	C++14	100 / 100	230 ms	31992 KiB

Arcade

#include <bits/stdc++.h>
using namespace std;

#define oo 1e15
#define fi first
#define se second
#define sp(iiii) setprecision(iiii)
#define IO ios_base::sync_with_stdio(false); cin.tie(0)
#define ms(aaaa,xxxx) memset(aaaa,xxxx,sizeof(aaaa))
#define cntbit(xxxx) __builtin_popcount(xxxx)
#define getbit(xxxx,aaaa) ((xxxx>>(aaaa-1))&1)

typedef long double ld;
typedef long long ll;
typedef unsigned long long ull;
typedef pair<int,int> pii;
typedef pair<pair<int,int>,int> piii;
typedef pair<long long,long long> pll;
typedef pair<pair<long long,long long>,long long> plll;
typedef pair<pair<long long,long long>,pair<long long,long long>> pllll;
typedef pair<pair<long long,long long>,bool> pllb;

const ll base=361;
const ll mod=998244353;
const ld eps=1e-5;
const ll maxn=1e9+9;

ll m,n,i,c[1000009],res,f[1000009],j,ans;
pll a[1000009],b[1000009];

int main(){
    IO;
    cin>>m>>n;
    for (i=1;i<=n;i++) {
        cin>>a[i].fi;
    }
    for (i=1;i<=n;i++) {
        cin>>a[i].se;
    }
    for (i=1;i<=n;i++) {
        b[i]={a[i].fi-a[i].se,a[i].fi+a[i].se};
    }
    sort(b+1,b+n+1);
    for (i=1;i<=n;i++) {
        c[i]=b[i].se;
        f[i]=-oo;
        //cout<<c[i]<<' ';
    }
    f[0]=oo;
    //cout<<'\n';
    for (i=1;i<=n;i++) {
        ans=0;
        for (j=n;j>0;j/=2) {
            while (ans+j<=n&&c[i]<f[ans+j]) {
                ans+=j;
            }
        }
        f[ans+1]=c[i];
        res=max(res,ans+1);
    }
    cout<<res<<'\n';
}

• Subtask 1: 7 / 7
• Subtask 2: 11 / 11
• Subtask 3: 12 / 12
• Subtask 4: 21 / 21
• Subtask 5: 14 / 14
• Subtask 6: 20 / 20
• Subtask 7: 15 / 15