Submission #857114

#	Time	Username	Problem	Language	Result	Execution time	Memory
857114		NotLinux	Advertisement 2 (JOI23_ho_t2)	C++17	100 / 100	124 ms	12528 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define int long long
pair < int , int > rot(pair < int , int > a){
	return {a.first - a.second , a.first + a.second};
}
void solve(){
	int n;cin >> n;
	pair < int , int > arr[n];
	for(int i = 0;i<n;i++){
		cin >> arr[i].first >> arr[i].second;
		arr[i] = rot(rot(rot(arr[i])));
	}
	sort(arr , arr + n);
	int ans = 0 , miny = 1e18 + 7;
	for(int i = 0;i<n;i++){
		if(arr[i].second < miny){
			miny = arr[i].second;
			ans++;
		}
	}
	cout << ans << endl;
}
signed main(){
	ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
	int testcase = 1;//cin >> testcase;
	while(testcase--)solve();
}

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