제출 #341922

#제출 시각아이디문제언어결과실행 시간메모리
341922bigDuckUnscrambling a Messy Bug (IOI16_messy)C++14
0 / 100
3 ms492 KiB
#include "messy.h" #include<bits/stdc++.h> using namespace std; #define INIT ios_base :: sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);mt19937 rng(chrono::steady_clock::now().time_since_epoch().count()); #define mp make_pair #define pb push_back #define ft first #define sc second #define ll long long #define pii pair<int, int> #define count_bits __builtin_popcount int n; /* add_element("0"); compile_set(); check_element("0"); */ string s; void build(int l, int r){ int mid=(l+r)>>1ll; for(int i=l; i<=mid; i++){ s[i-1]='1'; add_element(s); s[i-1]='0'; } if(l==r){ return ; } //construiect partea dreapta, partea stanga fiind complet acoperita for(int i=l; i<=mid; i++){ s[i-1]='1'; } build(mid+1, r); //construiesc partea stanga, partea dreapta fiind total acoperita for(int i=l; i<=mid; i++){ s[i-1]='0'; } build(l, mid); } vector<int> seg[1001]; void build_seg(int v, int tl, int tr){ if(tl==(tr-1) ){ for(int i=0; i<n; i++){ if(s[i]=='0'){ s[i]='1'; bool res=check_element(s); if(res){ seg[2*v].pb(i+1); } s[i]='0'; } } return ; } int mid=(tl+tr)>>1ll; for(int i=0; i<n; i++){ if(s[i]=='0'){ s[i]='1'; bool res=check_element(s); if(res){ seg[2*v].pb(i+1); } s[i]='0'; } } for(auto i:seg[2*v]){ s[i-1]='1'; } for(int i=0; i<n; i++){ if(s[i]=='0'){ seg[2*v+1].pb(i+1); } } build_seg(v*2+1, mid+1, tr); for(auto i:seg[2*v]){ s[i-1]='0'; } build_seg(2*v, tl, mid); } void nulify(){ for(int i=0; i<n; i++){ s[i]='0'; } } vector<int> res; void get_all(int v, int l, int r){ if(l==r){ res[l-1]=seg[v][0]; return; } get_all(v*2, l, (l+r)>>1ll); get_all(2*v+1, ((l+r)>>1ll)+1, r); return; } std::vector<int> restore_permutation(int N, int w, int r) { n=N; s.resize(n); for(int i=0; i<n; i++){ s[i]='0'; } build(1, n); compile_set(); nulify(); build_seg(1, 1, n); res.resize(n); get_all(1, 1, n); return res; }
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