Submission #756518

#	Time	Username	Problem	Language	Result	Execution time	Memory
756518		michao	Advertisement 2 (JOI23_ho_t2)	C++14	59 / 100	2048 ms	5380 KiB

Main

#include <bits/stdc++.h>
#define int long long
#define mp make_pair
#define pb push_back
#define ld long double
#define pii pair<int,int>
#define sz(x) (int)x.size()
#define piii pair<pii,pii>
#define precise cout<<fixed<<setprecision(10)
#define st first
#define nd second
#define ins insert
#define vi vector<int>
#define BOOST ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0)
using namespace std;
const int MAX=5e5+5;
int x[MAX],e[MAX];
bool cmp(int i,int j){
  if (e[i]!=e[j])return e[i]>e[j];
  return x[i]<x[j];
}
bool O[MAX];
bool check(int i,int j){
  return e[i]-e[j]>=abs(x[i]-x[j]);
}
int32_t main()
{
  BOOST;
  int n;
  cin>>n;
  vi pom;
  for (int i=1;i<=n;i++)pom.pb(i);
  for (int i=1;i<=n;i++)cin>>x[i]>>e[i];
  sort(pom.begin(),pom.end(),cmp);
  int ans=0;
  for (auto it:pom){
    if (O[it])continue;
    O[it]=true;
    ans++;
    for (int i=1;i<=n;i++){
      if (i==it)continue;
      if (check(it,i))O[i]=true;
    }
  }
  cout<<ans;
  return 0;
}

• Subtask 1: 0 / 10
• Subtask 2: 23 / 23
• Subtask 3: 36 / 36
• Subtask 4: 0 / 31