Submission #1166251

#	Time	Username	Problem	Language	Result	Execution time	Memory
1166251		Syrius	Advertisement 2 (JOI23_ho_t2)	C++20	100 / 100	291 ms	10324 KiB

Main

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

// #define int long long
#define ll long long
#define ff first
#define ss second
#define pint pair < int , int >
#define fast ios_base::sync_with_stdio(NULL); cin.tie(NULL)
typedef vector < int > vint;

const int inf = 1e9 + 9;
const int mxn = 5e5 + 2;
const int mod = 1e9 + 7;

int x[mxn] , y[mxn];

int main() {

    int n;
    cin >> n;

    vector < tuple < int , int , int > > v;
    for (int i = 0; i < n; i++) {
        cin >> x[i] >> y[i];
        v.push_back({-y[i] + x[i] , -x[i] , y[i]});
    }

    sort(v.begin() , v.end());
    
    int t = -inf;
    int ans = 0;
    for (auto tup : v) {
        int yint , xx , yy;
        tie(yint , xx , yy) = tup;
        xx = -xx;
        if (xx + yy > t) {
            ans++;
            t = xx + yy;
        }
    }

    cout << ans << '\n';
}

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