Submission #967574

#TimeUsernameProblemLanguageResultExecution timeMemory
967574happy_nodeAmusement Park (JOI17_amusement_park)C++17
80 / 100
20 ms4568 KiB
#include "Joi.h"
#include <bits/stdc++.h>
using namespace std;
 
typedef long long ll;
 
const int MX=10005;
 
vector<int> adj[MX];
 
int timer=-1;
vector<int> euler;
int sz[MX], par[MX], tin[MX], tout[MX];


struct DSU {
        int par[MX];
 
        int find(int v) {
                return par[v]==v?v:par[v]=find(par[v]);
        }
 
        bool merge(int u, int v) {
                u=find(u),v=find(v);
                if(u==v) return false;
                par[u]=v;
                return true;
        }
 
        void prep(int N) {
                for(int i=0;i<N;i++) par[i]=i;
        }
} DS;
 
void dfs(int v, int p) {
        tin[v]=++timer;
        euler.push_back(v);
        sz[v]=1;
        par[v]=p;
        for(auto u:adj[v]) {
                if(u==p) continue;
                dfs(u,v);
                sz[v]+=sz[u];
        }
        tout[v]=timer;
}
 
void Joi(int N, int M, int A[], int B[], long long X, int T) {
        DS.prep(N);
        
        for(int i=0;i<M;i++) {
                int x=A[i],y=B[i];
                if(DS.merge(x,y)) {
                        adj[x].push_back(y);
                        adj[y].push_back(x);
                }
        }

        dfs(0,-1);
 
        for(int i=0;i<N;i++) {
                int k=i%60;
                MessageBoard(euler[i],X>>k&1);
        }
}
#include "Ioi.h"
#include <bits/stdc++.h>
using namespace std;
 
typedef long long ll;
 
const int MX=10005;
 
vector<int> adj[MX];
 
int timer=-1;
vector<int> euler;
int sz[MX], par[MX], tin[MX], tout[MX];
 
void dfs(int v, int p) {
        tin[v]=++timer;
        euler.push_back(v);
        sz[v]=1;
        par[v]=p;
        for(auto u:adj[v]) {
                if(u==p) continue;
                dfs(u,v);
                sz[v]+=sz[u];
        }
        tout[v]=timer;
}
 
ll get(int x, int y) {
        return y*(1LL<<(tin[x]%60));
}
 
ll res=0, cnt=0;
 
bool vis[60];
 
void dfs0(int v, int p) {
        if(cnt==60) return;
        for(auto u:adj[v]) {
                if(u==p) continue;
                if(!vis[tin[u]%60]) cnt++;
                vis[tin[u]%60]=1;
                res|=get(u,Move(u));
                dfs0(u,v);
                if(cnt==60) return;
                Move(v);
        }
}

struct DSU {
        int par[MX];
 
        int find(int v) {
                return par[v]==v?v:par[v]=find(par[v]);
        }
 
        bool merge(int u, int v) {
                u=find(u),v=find(v);
                if(u==v) return false;
                par[u]=v;
                return true;
        }
 
        void prep(int N) {
                for(int i=0;i<N;i++) par[i]=i;
        }
} ds;
 
long long Ioi(int N, int M, int A[], int B[], int P, int V, int T) {
        ds.prep(N);
        
        for(int i=0;i<M;i++) {
                int x=A[i],y=B[i];
                if(ds.merge(x,y)) {
                        adj[x].push_back(y);
                        adj[y].push_back(x);
                }
        }

        dfs(0,-1);
 
        int k=V;
        while(sz[P]<60) {
                P=par[P];
                k=Move(P);
        }
 
        res|=get(P,k);
        cnt++;
        vis[tin[P]%60]=1;
        dfs0(P,par[P]);
 
        return res;
}
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