Submission #519699

#	Time	Username	Problem	Language	Result	Execution time	Memory
519699		ac2hu	Arcade (NOI20_arcade)	C++14	7 / 100	1 ms	332 KiB

Arcade

#include <bits/stdc++.h>
using namespace std;
const int N = 5e5 + 10;
struct mov{
    int t,loc;
} a[N];
int n,m;
signed main(){
    iostream::sync_with_stdio(false);
    cin.tie(nullptr);cout.tie(nullptr);
    cin >> n >> m;
    vector<pair<int,int>> a(m);
    for(int i = 0;i<m;i++){
        cin >> a[i].first;
    }
    for(int i =0 ;i<m;i++){
        cin >> a[i].second;
    }
    sort(a.begin(),a.end(),[&](pair<int,int> a,pair<int,int> b){
        return a.first < b.first||(a.first == b.first && a.second > b.second);
    });
    a.erase(unique(a.begin(),a.end()), a.end());
    m = a.size();
    // int idxx[m];
    // for(int i = 0;i<m;i++)
    //     cout << a[i].first << " ";
    // cout << "\n";
    // for(int i = 0;i<m;i++)
    //     cout << a[i].second << " ";
    // cout << "\n";
    vector<int> arms;
    for(int i = 0;i<m;i++){
        int idx = -1;
        int mn = 1e9;
        for(int j = 0;j<(int)arms.size();j++){
            int e = arms[j];
            if(abs(a[e].second - a[i].second) <= abs(a[e].first - a[i].first)){
                int tm = abs(a[i].second - a[e].second);
                if(mn > tm){
                    idx = j;
                    mn = tm;
                }
            }
        }
        if(idx == -1){
            arms.push_back(i);
            // idxx[i] = arms.size() - 1;
        }
        else{
            arms[idx] = i;
            // idxx[i] = idx;
        }
    }
    // for(int i = 0;i<m;i++)
    //     cout << idxx[i] << " ";
    // cout << "\n";
    cout << arms.size() << "\n";
}

• Subtask 1: 7 / 7
• Subtask 2: 0 / 11
• Subtask 3: 0 / 12
• Subtask 4: 0 / 21
• Subtask 5: 0 / 14
• Subtask 6: 0 / 20
• Subtask 7: 0 / 15