Submission #1219836

#	Time	Username	Problem	Language	Result	Execution time	Memory
1219836		guagua0407	Game (APIO22_game)	C++20	2 / 100	0 ms	408 KiB

game

#include "game.h"
//#include "grader.cpp"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<int,int>
#define f first
#define s second
#define all(x) x.begin(),x.end()
#define _ ios::sync_with_stdio(0); cin.tie(0); cout.tie(0);

namespace{
    const int inf=1e9;
    vector<int> mn,mx;
    int k;
    vector<vector<int>> adj,adjr;
}


void init(int n, int _k) {
    k=_k;
    mn=vector<int>(n,inf);
    mx=vector<int>(n,-1);
    adj.resize(n);
    adjr.resize(n);
    for(int i=0;i<k;i++){
        if(i>0){
            mx[i]=i-1;
        }
        if(i<k-1){
            mn[i]=i+1;
        }
    }
}

int add_teleporter(int a, int b) {
    adj[a].push_back(b);
    adjr[b].push_back(a);
    {
        int tmp=mn[b];
        if(b<k) tmp=min(tmp,b);
        if(tmp<mn[a]){
            mn[a]=tmp;
            queue<int> q;
            q.push(a);
            while(!q.empty()){
                int v=q.front();
                q.pop();
                if(mn[v]<=mx[v]) return 1;
                for(auto u:adjr[v]){
                    if(mn[v]<mn[u]){
                        mn[u]=mn[v];
                        q.push(u);
                    }
                }
            }
        }
    }
    {
        int tmp=mx[a];
        if(a<k) tmp=max(tmp,a);
        if(tmp>mx[b]){
            mx[b]=tmp;
            queue<int> q;
            q.push(b);
            while(!q.empty()){
                int v=q.front();
                q.pop();
                if(mn[v]<=mx[v]) return 1;
                for(auto u:adj[v]){
                    if(mx[v]>mx[u]){
                        mx[u]=mx[v];
                        q.push(u);
                    }
                }
            }
        }
    }
    return 0;
}

• Subtask 1: 2 / 2
• Subtask 2: 0 / 10
• Subtask 3: 0 / 18
• Subtask 4: 0 / 30
• Subtask 5: 0 / 40