제출 #792855

#제출 시각아이디문제언어결과실행 시간메모리
792855alvingogoUnscrambling a Messy Bug (IOI16_messy)C++14
100 / 100
2 ms480 KiB
#include "messy.h" #include <bits/stdc++.h> #define fs first #define sc second #define p_q priority_queue using namespace std; vector<int> ans; void encode(int l,int r,string g){ if(l==r){ return; } int m=(l+r)/2; for(int i=l;i<=m;i++){ auto s=g; s[i]='1'; add_element(s); } string a=g,b=g; for(int i=m+1;i<=r;i++){ a[i]='1'; } for(int i=l;i<=m;i++){ b[i]='1'; } encode(l,m,a); encode(m+1,r,b); } void decode(int l,int r,string g,vector<int> v){ if(l==r){ ans[v[0]]=l; return; } int m=(l+r)/2; vector<int> c,d; string a=g,b=g; for(auto h:v){ auto s=g; s[h]='1'; if(check_element(s)){ c.push_back(h); b[h]='1'; } else{ d.push_back(h); a[h]='1'; } } decode(l,m,a,c); decode(m+1,r,b,d); } vector<int> restore_permutation(int n, int w, int r) { encode(0,n-1,string(n,'0')); compile_set(); ans.resize(n); vector<int> v(n); iota(v.begin(),v.end(),0); decode(0,n-1,string(n,'0'),v); return ans; }
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