Submission #935767

#	Time	Username	Problem	Language	Result	Execution time	Memory
935767		abcvuitunggio	Arcade (NOI20_arcade)	C++17	100 / 100	186 ms	15008 KiB

Arcade

#include <bits/stdc++.h>
using namespace std;
int n,m,t[500001],a;
vector <pair <int, int>> p;
set <int> s;
int main(){
    ios_base::sync_with_stdio(NULL);cin.tie(nullptr);
    cin >> n >> m;
    for (int i=0;i<m;i++)
        cin >> t[i];
    for (int i=0;i<m;i++){
        cin >> a;
        p.push_back({t[i]+a,t[i]-a});
    }
    sort(p.begin(),p.end());
    for (auto [i,j]:p){
        auto it=s.lower_bound(-j);
        if (it!=s.end())
            s.erase(it);
        s.insert(-j);
    }
    cout << s.size();
}

• 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