Submission #924132

#	Time	Username	Problem	Language	Result	Execution time	Memory
924132		ErJ	Advertisement 2 (JOI23_ho_t2)	C++17	100 / 100	123 ms	16212 KiB

Main

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

#define ll long long
#define vi vector<ll>
#define vvi vector<vector<ll>>
#define vs vector<string>
#define vc vector<char>
#define vb vector<bool>
#define vp vector<pair<ll, ll>>
#define pp pair<ll, ll>
#define qi queue<ll>
#define qp queue<pp>
#define pqi priority_queue<ll>
#define pqp priority_queue<pp>
#define mi map<ll, ll>
#define mpi map<pp, ll>
#define mip map<ll, pp>
#define mpp map<pp, pp>
#define mb map<ll, bool>
#define si set<ll>
#define sp set<pp>
#define mod 1000000007
#define rep(a, b) for(int a = 0; a < (b); a++)
#define inf 100000000111111111


int main()
{
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    int n;
    cin >> n;
    vi X(n), E(n);
    vp C(n);
    rep(i, n) {
        cin >> X[i] >> E[i];
        C[i] = { X[i] - E[i], X[i] + E[i] };
    }
    sort(C.begin(), C.end(), [](auto& i, auto& j) {
        if (i.first != j.first) return i.first < j.first;
        return i.second > j.second;
        });
    ll MAXB = -1;
    ll ans = 0;
    rep(i, n) {
        if (C[i].second > MAXB) {
            ans++;
            MAXB = C[i].second;
        }
    }
    cout << ans << endl;
}

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