Submission #274642

#	Time	Username	Problem	Language	Result	Execution time	Memory
274642		johutha	Arcade (NOI20_arcade)	C++17	100 / 100	212 ms	20344 KiB

Arcade

#include <iostream>
#include <vector>
#include <algorithm>

#define int int64_t

using namespace std;

signed main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    
    int n, m;
    cin >> n >> m;

    vector<pair<int,int>> ip(m);
    for (int i = 0; i < m; i++) cin >> ip[i].first;
    for (int i = 0; i < m; i++) cin >> ip[i].second;

    for (int i = 0; i < m; i++) ip[i] = make_pair(ip[i].first + ip[i].second, ip[i].first - ip[i].second);
    sort(ip.begin(), ip.end());

    vector<int> ls(m + 1, (int)1e9);
    for (int i = 0; i < m; i++)
    {
        int v = -ip[i].second;
        *lower_bound(ls.begin(), ls.end(), v) = v;
    }
    cout << m + 1 - count(ls.begin(), ls.end(), (int)1e9) << "\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