Submission #1166253

#	Time	Username	Problem	Language	Result	Execution time	Memory
1166253		akacool445k	Advertisement 2 (JOI23_ho_t2)	C++20	100 / 100	110 ms	8264 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define ff first
#define ss second
#define pb push_back
#define int long long
#define pint pair<int, int>
#define vint vector<int>
const int mod = 1e9 + 7;
const int shrek = 5e5 + 5;
const int say = INT_MAX / 2;
const int gex = INT_MIN / 2;
const long long oo = 1e18;
bool cmp(pint a, pint b) {
	if((a.ss - a.ff) == (b.ss - b.ff)) {
		return a.ff > b.ff;
	}
	return (a.ss - a.ff) > (b.ss - b.ff);
}
signed main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
	cout.tie(0);
	int n; cin >> n;
	pint a[n];
	for(int i = 0; i < n; i++) {
		cin >> a[i].ff >> a[i].ss;
	}
	sort(a, a + n, cmp);
	int maxi = a[0].ss + a[0].ff;
	int ans = 1;
	for(int i = 1; i < n; i++) {
		if((a[i].ss - a[i].ff) != (a[i - 1].ss - a[i - 1].ff)) {
			if(maxi < (a[i].ss + a[i].ff)) {
				ans++;
			}
		} 
		maxi = max(maxi, a[i].ss + a[i].ff);
	}
	cout << ans << '\n';
    return 0;
}

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