Submission #997526

#	Time	Username	Problem	Language	Result	Execution time	Memory
997526		Abito	Passport (JOI23_passport)	C++17	6 / 100	70 ms	16976 KiB

passport

#include <bits/stdc++.h>
#define F first
#define S second
#define pb push_back
#define ppb pop_back
#define ep insert
#define endl '\n'
#define elif else if
#define pow pwr
#define sqrt sqrtt
#define int long long
#define ll long long
#define y1 YONE
typedef unsigned long long ull;
using namespace std;
const int N=2e5+5;
int dis[N],L[N],R[N],n,q;
set<int> s;
void bfs(){
    for (int i=2;i<=n;i++) dis[i]=INT_MAX;
    queue<int> q;q.push(1);s.erase(1);
    while (!q.empty()){
        int x=q.front();q.pop();
        while (true){
            auto it=s.lower_bound(L[x]);
            if (it==s.end()) break;
            if (*it>R[x]) break;
            int y=*it;
            s.erase(it);
            dis[y]=dis[x]+1;
            q.push(y);
        }
    }return;
}
int32_t main(){
    ios_base::sync_with_stdio(false);cin.tie(NULL);cout.tie(NULL);
    cin>>n;
    for (int i=1;i<=n;i++) cin>>L[i]>>R[i],s.ep(i);
    cin>>q;
    while (q--){
        int x;cin>>x;
        bfs();
        int mx=0;
        for (int i=1;i<=n;i++) mx=max(mx,dis[i]);
        if (mx>=INT_MAX) cout<<-1<<endl;
        else cout<<mx<<endl;
    }
    return 0;
}

• Subtask 1: 6 / 6
• Subtask 2: 0 / 16
• Subtask 3: 0 / 24
• Subtask 4: 0 / 8
• Subtask 5: 0 / 46