Submission #919815

#	Time	Username	Problem	Language	Result	Execution time	Memory
919815		Ludissey	Advertisement 2 (JOI23_ho_t2)	C++14	100 / 100	138 ms	17744 KiB

Main

#include <bits/stdc++.h>
#define int long long
using namespace std;

bool comp(pair<int,int> a, pair<int,int> b){
	if(a.first==b.first) return a.second>b.second;
	return a.first<b.first;
}

signed main() {
    ios_base::sync_with_stdio(false); cin.tie(nullptr);
	int N; cin >> N;
	vector<pair<int,int>> a(N);
	for (int i = 0; i < N; i++)
	{
		int x,e; cin >> x >> e;
		a[i]={x-e, x+e};
	}
	sort(a.begin(), a.end(), comp);
	int sum=1;
	int r=a[0].second;
	for (int i = 1; i < N; i++)
	{
		if(r<a[i].second) {
			sum++;
		}
		r=max(a[i].second, r);
	}
	cout << sum << "\n";
    return 0;
}

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