Submission #1103906

#TimeUsernameProblemLanguageResultExecution timeMemory
1103906epicci23Game (APIO22_game)C++17
2 / 100
5 ms19280 KiB
#include "bits/stdc++.h" #include "game.h" //#define int long long #define all(v) v.begin() , v.end() #define sz(a) (int)a.size() using namespace std; const int N = 3e5 + 5; const int BL = 600; vector<int> v[N],g[N]; bool vis[N]; int n,m,k,out[N],in[N],bin[N],bout[N]; bool ok=0; void upd_in(int a,int val){ if(in[a]<=val || ok || bin[a]>bout[a]) return; in[a]=min(in[a],val); bin[a]=min(bin[a],val/BL); if(in[a]<out[a] || bin[a]<bout[a]){ ok=1; return; } if(in[a]==out[a] && a>=k){ ok=1; return; } for(int x:g[a]){ if(bin[x]!=bin[a]) continue; if(val<in[x]) upd_in(x,val); } } void upd_out(int a,int val){ if(out[a]>=val || ok || bin[a]>bout[a]) return; out[a]=max(out[a],val); bout[a]=max(bout[a],val/BL); if(in[a]<out[a] || bin[a]<bout[a]){ ok=1; return; } if(in[a]==out[a] && a>=k){ ok=1; return; } for(int x:v[a]){ if(bin[x]!=bin[a]) continue; if(out[x]<val) upd_out(x,val); } } void upd_bin(int a,int val){ if(bin[a]<=val || ok) return; bin[a]=val; if(bin[a]<bout[a] || in[a]<out[a]){ ok=1; return; } if(in[a]==out[a] && a>=k){ ok=1; return; } if(bin[a]==bout[a] && !vis[a]){ vis[a]=1; for(int u=BL*bout[a];u<min(k,BL*(bout[a]+1));u++) upd_out(u,u); for(int u=BL*bout[a];u<min(k,BL*(bout[a]+1));u++) upd_in(u,u); } else upd_in(a,in[a]); for(int x:g[a]){ if(bin[x]>val) upd_bin(x,val); else if(bin[x]==val) upd_in(x,in[a]); } } void upd_bout(int a,int val){ if(bout[a]>=val || ok) return; bout[a]=val; if(bin[a]<bout[a] || in[a]<out[a]){ ok=1; return; } if(in[a]==out[a] && a>=k){ ok=1; return; } if(bin[a]==bout[a] && !vis[a]){ vis[a]=1; for(int u=BL*bout[a];u<min(k,BL*(bout[a]+1));u++) upd_out(u,u); for(int u=BL*bout[a];u<min(k,BL*(bout[a]+1));u++) upd_in(u,u); } else upd_out(a,out[a]); for(int x:v[a]){ if(bout[x]<val) upd_bout(x,val); else if(bout[x]==val) upd_out(x,out[a]); } } void init(int _n,int _k){ n=_n,k=_k; for(int i=1;i<k;i++){ v[i-1].push_back(i); g[i].push_back(i-1); } fill(bout,bout+N,-1); fill(bin,bin+N,k); fill(out,out+N,-1); fill(in,in+N,k); for(int i=0;i<k;i++) bin[i]=bout[i]=i/BL; } int add_teleporter(int a, int b){ if(a==b && a<k) ok=1; if(a<k && b<k && a>b) ok=1; v[a].push_back(b); g[b].push_back(a); upd_bout(b,bout[a]); upd_bin(a,bin[b]); upd_in(a,in[b]); upd_out(b,out[a]); return ok; } /*void _(){ cin >> n >> m >> k; init(n,k); for(int i=1;i<=m;i++){ int a,b; cin >> a >> b; cout << add_teleporter(a,b) << '\n'; } } int32_t main(){ cin.tie(0); ios::sync_with_stdio(0); int tc=1;//cin >> tc; while(tc--) _(); return 0; }*/
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