Submission #742112

#	Time	Username	Problem	Language	Result	Execution time	Memory
742112		1075508020060209tc	Advertisement 2 (JOI23_ho_t2)	C++14	100 / 100	487 ms	11108 KiB

Main

#include <bits/stdc++.h>
using namespace std;
#define int long long
#define X first
#define Y second
int mod=998244353;
int n;
pair<int,int>ar[500005];


signed main() {
cin>>n;
for(int i=1;i<=n;i++){
    int x;int y;
    cin>>x>>y;
    ar[i].X=x-y;
    ar[i].Y=x+y;
    ar[i].Y*=-1;
}
sort(ar+1,ar+n+1);
for(int i=1;i<=n;i++){
    ar[i].Y*=-1;
}
int ans=n;
int mxh=ar[1].Y;
for(int i=2;i<=n;i++){
    if(ar[i].Y<=mxh){
        ans--;
    }
    mxh=max(mxh,ar[i].Y);
}
cout<<ans<<endl;

}

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