Submission #1146788

#	Time	Username	Problem	Language	Result	Execution time	Memory
1146788		goduadzesaba	Advertisement 2 (JOI23_ho_t2)	C++20	100 / 100	128 ms	16032 KiB

Main

#include <bits/stdc++.h>
#define int long long 
using namespace std;
const int N=5e5+5,mod=1e9+7,inf=1e18;
int n,a[N],x,e,s[N],d[N],mx,ans;
vector <pair<int,int> > v;
bool cmp(pair<int, int> a, pair<int, int> b) {
    if (a.first != b.first) {
        return a.first < b.first;
    }
    return a.second>b.second;
}
signed main(){
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cin>>n;
    for (int i=1; i<=n; i++){
        cin>>x>>e;
        s[i]=x+e; d[i]=x-e;
        v.push_back({d[i],s[i]});
    }
    sort(v.begin(),v.end(),cmp); mx=-inf;
    for (auto i:v){
        if (i.second>mx){
            ans++; mx=i.second;
        }
    }
    cout<<ans;
}

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