Submission #1050254

#TimeUsernameProblemLanguageResultExecution timeMemory
1050254vjudge1Dungeons Game (IOI21_dungeons)C++17
100 / 100
2173 ms2061108 KiB
#include "dungeons.h" #include <bits/stdc++.h> using namespace std; struct level { private: struct dAtA{ int to; long long inc,thres; dAtA(int go,int add,long long T){ to=go,inc=add,thres=T; } dAtA(){ to=0,inc=0,thres=0; } dAtA(dAtA a,dAtA b){ to=b.to; inc=a.inc+b.inc; thres=min(1ll*a.thres,b.thres-a.inc); } } bj[400100][24]; public: long long strength(int n,int k){ return bj[n][k].inc; } long long thres(int n,int k){ return bj[n][k].thres; } int dungeon(int n,int k){ return bj[n][k].to; } void setdungeon(int n,int go,int add,long long T){ bj[n][0]=dAtA(go,add,T); } void preproc(int n){ for(int j=1;j<24;j++) for(int i=0;i<=n;i++) bj[i][j]=dAtA(bj[i][j-1],bj[bj[i][j-1].to][j-1]); } } susss[9]; int l[400100],p[400100],s[400100],w[400100],fin; long long pws[24]; int llog(int x){ for(int i=0;i<24;i++) if(pws[i+1]>x) return i; } void init(int n,vector<int> S,vector<int> P,vector<int> W,vector<int> L) { fin=n; pws[0]=1; for(int i=1;i<24;i++) pws[i]=pws[i-1]*10; for(int i=0;i<n;i++) l[i]=L[i],p[i]=P[i],s[i]=S[i],w[i]=W[i]; for(int j=0;j<9;j++) for(int i=0;i<n;i++) { if(s[i]<=pws[j]) susss[j].setdungeon(i,w[i],s[i],1e18); else susss[j].setdungeon(i,l[i],p[i],s[i]); } for(int i=0;i<9;i++) susss[i].setdungeon(n,n,0,1e18), susss[i].preproc(n); } long long simulate(int x, int Z) { long long z=Z; while(1){ int K=min(8,llog(z)); for(int i=24;i--;) if(susss[K].thres(x,i)>z) z+=susss[K].strength(x,i), x=susss[K].dungeon(x,i); if(x==fin) return z; int k=s[x]; if(k<=z) x=w[x],z+=k; else x=l[x],z+=p[x]; if(x==fin) return z; } }

Compilation message (stderr)

dungeons.cpp: In function 'int llog(int)':
dungeons.cpp:45:1: warning: control reaches end of non-void function [-Wreturn-type]
   45 | }
      | ^
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