제출 #1150773

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1150773		vicvic	Arcade (NOI20_arcade)	C++20	0 / 100	0 ms	320 KiB

Arcade

#include <iostream>
#include <algorithm>
#include <cstdint>
#include <fstream>
#define cin f
#define cout g
#define int long long
using namespace std;
ifstream f ("test.in");
ofstream g ("test.out");
int n, m, a[500005], t[500005], len, dp[500005];
pair <int, int> ord[500005];
void add (int val)
{
    if (val>dp[len] || len==0)
    {
        dp[++len]=val;
    }
    int st=1, dr=len, poz=0;
    while (st<=dr)
    {
        int mij = (st+dr) >> 1;
        if (dp[mij]<val)
        {
            poz=mij;
            st=mij+1;
        }
        else dr=mij-1;
    }
    dp[poz+1]=val;
}
int32_t main ()
{
    ios :: sync_with_stdio (0);
    cin.tie (nullptr);
    cin >> n >> m;
    for (int i=1;i<=m;i++)
    {
        cin >> t[i];
    }
    for (int i=1;i<=m;i++)
    {
        cin >> a[i];
    }
    for (int i=1;i<=m;i++)
    {
        ord[i]=make_pair (a[i]+t[i], (a[i]-t[i]+m));
    }
    sort (ord+1, ord+m+1);
    for (int i=1;i<=m;i++)
    {
        add (ord[i].second);
    }
    cout << len;
    return 0;
}

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