Submission #759661

#	Time	Username	Problem	Language	Result	Execution time	Memory
759661		raysh07	Advertisement 2 (JOI23_ho_t2)	C++17	100 / 100	145 ms	24572 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define INF (int)1e18
#define f first
#define s second

mt19937_64 RNG(chrono::steady_clock::now().time_since_epoch().count());

void Solve() 
{
    int n;
    cin>>n;
    
    vector <pair<int, int>> v;
    
    int x[n], e[n];
    
    for (int i=0; i<n; i++)
    cin>>x[i]>>e[i];
    
    for (int i=0; i<n; i++){
        v.push_back({x[i] - e[i] , x[i] + e[i]});
    }
    
    sort(v.begin(), v.end());
    
    int best = -INF;
    int c = 0;
    for (int i=0; i<n; i++){
        if (i!=n-1 && v[i].f == v[i+1].f) continue;
        int val = v[i].s;
        if (val > best){
            best = val;
            c++;
        }
    }
    cout<<c<<"\n";
}

int32_t main() 
{
    auto begin = std::chrono::high_resolution_clock::now();
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    int t = 1;
   // cin >> t;
    for(int i = 1; i <= t; i++) 
    {
        //cout << "Case #" << i << ": ";
        Solve();
    }
    auto end = std::chrono::high_resolution_clock::now();
    auto elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(end - begin);
    cerr << "Time measured: " << elapsed.count() * 1e-9 << " seconds.\n"; 
    return 0;
}

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