Submission #1005521

#	Time	Username	Problem	Language	Result	Execution time	Memory
1005521		tvladm2009	Advertisement 2 (JOI23_ho_t2)	C++17	100 / 100	119 ms	15620 KiB

Main

#include <bits/stdc++.h>
 
using namespace std;
 
typedef long long ll;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    int n;
    cin >> n;
    vector<pair<int, int>> v(n);
    for (int i = 0; i < n; ++i) {
        int x, e;
        cin >> x >> e;
        v[i] = make_pair(e - x, e + x);
    }
    sort(v.begin(), v.end());
    vector<int> st;
    for (int i = 0; i < n; ++i) {
        while (!st.empty() && v[i].second >= st.back()) {
            st.pop_back();
        }
        st.push_back(v[i].second);
    } 
    cout << st.size() << "\n";
    return 0;
}

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