Submission #967647

#TimeUsernameProblemLanguageResultExecution timeMemory
967647happy_nodeAmusement Park (JOI17_amusement_park)C++17
83 / 100
20 ms4536 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++) { sort(adj[i].begin(),adj[i].end(),[&](int i, int j) { return sz[i]<sz[j]; }); } euler.clear(); timer=-1; 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); for(int i=0;i<N;i++) { sort(adj[i].begin(),adj[i].end(),[&](int i, int j) { return sz[i]<sz[j]; }); } euler.clear(); timer=-1; 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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