Submission #766545

#TimeUsernameProblemLanguageResultExecution timeMemory
766545KhizriPrisoner Challenge (IOI22_prison)C++17
80 / 100
30 ms1092 KiB
#include "prison.h" #include <bits/stdc++.h> using namespace std; #define ll long long #define pb push_back #define F first #define S second #define INF 1e18 #define all(v) (v).begin(),(v).end() #define rall(v) (v).rbegin(),(v).rend() #define pii pair<int,int> #define pll pair<ll,ll> #define OK cout<<"Ok"<<endl; #define MOD (ll)(1e9+7) const int mxn=5e3+5; int color[mxn]; int digit(int k,int idx){ if(idx>7){ return 0; } if(idx<0) idx=0; vector<int>vt; while(k>0){ vt.pb(k%3); k/=3; } while(vt.size()<8){ vt.pb(0); } return vt[7-idx]; } int lst(int idx){ if(idx==0) return 0; if(idx<=6) return 6; if(idx<=12) return 12; if(idx<=18) return 18; return 0; } int lst2(int idx){ if(idx<=3) return 3; if(idx<=9) return 9; if(idx<=15) return 15; if(idx<=21) return 21; return 0; } vector<vector<int>> devise_strategy(int n) { color[0]=1; int k=0,qq=-1; for(int i=1;i<=24;i++){ k++; if(k>3){ k=1; qq=qq*-1; } color[i]=k*qq; } vector<vector<int>>ans; for(int id=0;id<23;id++){ if(color[id]>0){ vector<int>vt; vt.pb(0); for(int i=1;i<=n;i++){ int idx=(id+2)/3-1; int q=digit(i,idx); if(id==0){ vt.pb(id+q+1); } else if(id==22){ if(digit(i,idx)==0){ vt.pb(-1); } else{ vt.pb(-2); } } else{ if(color[id]-1<q){ vt.pb(-2); } else if(color[id]-1>q){ vt.pb(-1); } else{ int q=digit(i,idx+1); vt.pb(lst(id)+q+1); } } } ans.pb(vt); } else{ vector<int>vt; vt.pb(1); for(int i=1;i<=n;i++){ int idx=(id+2)/3-1; int q=digit(i,idx); if(-color[id]-1<q){ vt.pb(-1); } else if(-color[id]-1>q){ vt.pb(-2); } else{ if(id>=19){ int q=digit(i,idx+1); if(q==0){ vt.pb(-2); } else if(q==2){ vt.pb(-1); } else{ vt.pb(22); } } else{ int q=digit(i,idx+1); vt.pb(lst2(id)+q+1); } } } ans.pb(vt); } } return ans; }
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