Submission #1174729

#	Time	Username	Problem	Language	Result	Execution time	Memory
1174729		Ciprian	Lightning Rod (NOI18_lightningrod)	C++20	40 / 100	1102 ms	263200 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define pi pair<int,int>
int32_t main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int n;
    cin>>n;
    vector<pi>p;
    for(int i=0; i<n;i++){
        int x,y;
        cin>>x>>y;
        p.push_back({y,x});
        
    }sort(p.rbegin(), p.rend());
    vector<pi>light;
    int ind=0;
    while(ind<n){
        if(light.size()==0){
            light.push_back(p[ind]);
        }else{
            bool check=false;
            for(auto e: light){
                if(abs(e.second-p[ind].second)<=e.first-p[ind].first){
                    check=true;
                    break;
                }
            }if(!check){
                light.push_back(p[ind]);
            }
        }ind++;
    }cout<<light.size()<<endl;

    return 0;
}

• Subtask 1: 0 / 4
• Subtask 2: 7 / 7
• Subtask 3: 12 / 12
• Subtask 4: 21 / 21
• Subtask 5: 0 / 26
• Subtask 6: 0 / 10
• Subtask 7: 0 / 20