Submission #1030824

#	Time	Username	Problem	Language	Result	Execution time	Memory
1030824		VMaksimoski008	Advertisement 2 (JOI23_ho_t2)	C++17	100 / 100	344 ms	15440 KiB

Main

#include <bits/stdc++.h>

#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
//#define int long long

using namespace std;

using ll = long long;
using pii = pair<int, int>;
using pll = pair<ll, ll>;

const int mod = 1e9 + 7;
const int LOG = 20;
const int maxn = 1e5 + 5;

signed main() {
    int n;
    cin >> n;

    vector<pii> v(n);
    for(int i=0; i<n; i++) {
        int a, b;
        cin >> a >> b;
        v[i] = { a - b, a + b };
    }

    sort(v.begin(), v.end(), [&](pii a, pii b) {
        if(a.first != b.first) return (a.first > b.first);
        return a.second < b.second;
    });

    stack<int> st;
    for(int i=0; i<n; i++) {
        while(!st.empty() && st.top() <= v[i].second) st.pop();
        st.push(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