Submission #990256

#	Time	Username	Problem	Language	Result	Execution time	Memory
990256		thelegendary08	Advertisement 2 (JOI23_ho_t2)	C++14	69 / 100	223 ms	29520 KiB

Main

#include<bits/stdc++.h>
#define pb push_back
#define int long long
#define ll long long int
#define vi vector<int>
#define vvi vector<vector<int>>
#define vll vector<long long int>
#define vvll vector<vector<long long int>>
#define pii pair<int, int>
#define vpii vector<pair<int, int>>
#define vc vector<char>
#define vvc vector<vector<char>>
#define vb vector<bool>
#define mii map<int,int>
#define mll map<long long int, long long int>
#define mivi map<int,vector<int>>
#define f0r(i,n) for(int i=0;i<n;i++)
#define FOR(i,k,n) for(int i=k;i<n;i++)
using namespace std;
signed main(){
	ios::sync_with_stdio(false);
	cin.tie(NULL);
	//ifstream cin(".in");
	//ofstream cout(".out");
	int n;
	cin>>n;
	vpii v(n);
	set<int>s;
	f0r(i,n){
        int x,e;
        cin>>x>>e;
        v[i] = {e,x};
        s.insert(x);
	}
	if(n <= 1000){
        sort(v.begin(), v.end());
        int ans = 0;
        vb vis(n,false);

        for(int i = n-1;i>=0;i--){
            if(!vis[i]){
                ans++;
                vis[i] = 1;
                for(int j = i-1; j>=0; j--){
                    if(!vis[j] && (v[i].first - v[j].first) >= abs(v[i].second - v[j].second)){
                        vis[j] = 1;
                    }
                }
            }
        }
        cout<<ans;

	}
	else cout<<s.size();

}

• Subtask 1: 10 / 10
• Subtask 2: 23 / 23
• Subtask 3: 36 / 36
• Subtask 4: 0 / 31