Submission #1009865

#TimeUsernameProblemLanguageResultExecution timeMemory
1009865pccGame (APIO22_game)C++17
30 / 100
4066 ms136076 KiB
#include "game.h" #include <bits/stdc++.h> using namespace std; #pragma GCC optimize("O3,unroll-loops") #pragma GCC target("avx2,popcnt,sse4") const int mxk = 1010; const int mxn = 3e4+10; bool flag = false; char cnt[mxk][mxn]; void add(int row,int k){ cnt[row][k]++; if(cnt[row][k]>=2)flag = true; return; } vector<short> g[mxn],rg[mxn]; struct DS{ bitset<mxn> vis,rvis; int id; DS(int ii = 0):id(ii){vis.reset();rvis.reset();} queue<short> q; void BFS(int now,vector<short> graph[],bool rev){ if(!rev){ if(vis[now])return; vis[now] = 1; add(id,now); } else{ if(rvis[now])return; rvis[now] = 1; add(id,now); } q.push(now); while(!q.empty()){ auto now = q.front(); q.pop(); for(auto nxt:graph[now]){ if(!rev){ if(vis[nxt])continue; vis[nxt] = true; add(id,nxt); q.push(nxt); } else{ if(rvis[nxt])continue; rvis[nxt] = true; add(id,nxt); q.push(nxt); } } } return; } void add_edge(int a,int b){ if(vis[a])BFS(b,g,0); if(rvis[b])BFS(a,rg,1); return; } }; DS arr[mxk]; int N,K; void init(int n, int k) { N = n,K = k; for(int i = 0;i<k;i++){ arr[i].id = i; arr[i].vis[i] = arr[i].rvis[i] = 1; } for(int i = 0;i<=k-2;i++){ g[i].push_back(i+1); rg[i+1].push_back(i); for(int j = 0;j<k;j++){ arr[j].add_edge(i,i+1); } } flag = false; /* cerr<<"INIT DONE!"<<endl; for(int i = 0;i<K;i++){ for(int j = 0;j<N;j++)cerr<<arr[i].vis[j];cerr<<endl; for(int j = 0;j<N;j++)cerr<<arr[i].rvis[j];cerr<<endl; cerr<<endl; } */ return; } int add_teleporter(int u, int v) { if(u == v){ return (u<K); } for(int i = 0;i<K;i++){ g[u].push_back(v); rg[v].push_back(u); arr[i].add_edge(u,v); } return flag; }
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