Submission #1038717

#TimeUsernameProblemLanguageResultExecution timeMemory
1038717_8_8_Game (APIO22_game)C++17
0 / 100
96 ms262144 KiB
#include "game.h" #include <bits/stdc++.h> using namespace std; const int N = 3e5 + 12; vector<int> g[N],gr[N]; set<int> L[N * 3],R[N * 3]; int k; int nn; void build(int v = 1,int tl = 0,int tr = k - 1) { if(tl > tr) return; int tm = (tl + tr) >> 1; for(int i = tl;i <= tr;i++) { if(i <= tm) { L[v].insert(i); } if(i >= tm) { R[v].insert(i); } } if(tl == tr) return; build(v + v,tl,tm - 1); build(v + v + 1,tm + 1,tr); } void init(int n, int K) { k = K; nn = n; for(int i = 0;i <= k - 2;i++) { g[i].push_back(i + 1); gr[i + 1].push_back(i); } build(); } bool CYC = false; vector<int>_r[N]; bool check(int tm,int prev,int v,int val) { if(prev == -1) return 1; if(prev < tm && R[v / 2].find(val) == R[v / 2].end()) return false; if(prev > tm && L[v / 2].find(val) == L[v / 2].end()) return false; return 1; } set<int> bfl[N * 3],bfr[N * 3],nl[N * 3],nr[N * 3]; void add(int x,int y,int &v,int &tl,int &tr,int &prev) { if(tl > tr) return; if(CYC) return; int tm = (tl + tr) >> 1; function<void(int)> dfs = [&](int u){ R[v].insert(u); _r[u].push_back(tm); nr[v].insert(u); bfr[v].erase(u); if(L[v].find(u) != L[v].end()) { CYC = 1; return; } for(int to:g[u]) { if(R[v].find(to) == R[v].end() && check(tm,prev,v,to)) { dfs(to); } if(CYC) return; } if(CYC) return; }; nr[v].clear(); bool ok = false; if(R[v].find(x) != R[v].end()){ ok=1; bfr[v].insert(y); } if(prev < tm) { for(int j:nr[v / 2]) { if(bfr[v].find(j) != bfr[v].end()) { dfs(j); ok = 1; } } }else { for(int j:nl[v / 2]) { if(bfr[v].find(j) != bfr[v].end()) { dfs(j); ok = 1; } } } if(ok) { v = v + v + 1; tl = tm + 1; prev = tm; } else { v += v; tr = tm - 1; prev = tm; } } void addl(int x,int y,int &v,int &tl,int &tr,int &prev) { if(tl > tr) return; if(CYC) return; int tm = (tl + tr) >> 1; function<void(int)> dfs1 = [&](int u){ if(R[v].find(u) != R[v].end()) { CYC = 1; return; } L[v].insert(u); nl[v].insert(u); for(int to:gr[u]) { if(L[v].find(to) == L[v].end() && (check(tm,prev,v,to))) { dfs1(to); } if(CYC) return; } if(CYC) return; }; nl[v].clear(); bool ok = false; if(L[v].find(y) != L[v].end()) { ok = 1; bfl[v].insert(x); } if(prev < tm) { for(int j:nr[v / 2]) { if(bfl[v].find(j) != bfl[v].end()) { dfs1(j); ok = 1; } } }else { for(int j:nl[v / 2]) { if(bfl[v].find(j) != bfl[v].end()) { dfs1(j); ok = 1; } } } if(ok) { v += v; tr = tm - 1; prev = tm; } else { v = v + v + 1; tl = tm + 1; prev = tm; } } void _add(int u,int v) { int v1 = 1,tl1 = 0,tr1 = k - 1,prev1 = -1; int v2 = 1,tl2 = 0,tr2 = k - 1,prev2 = -1; nr[0].clear(); nr[0].insert(u); nr[0].insert(v); while(tl1 <= tr1 || tl2 <= tr2) { addl(u,v,v1,tl1,tr1,prev1); add(u,v,v2,tl2,tr2,prev2); if(CYC) break; } } int quer = 1; int add_teleporter(int u, int v) { quer++; if(max(u,v) <= k - 1) { if(u >= v) { CYC = 1; return 1; } return 0; } if(CYC) return 1; g[u].push_back(v); gr[v].push_back(u); _add(u,v); return CYC; }
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...