Submission #624666

#	Time	Username	Problem	Language	Result	Execution time	Memory
624666		sofapuden	Unscrambling a Messy Bug (IOI16_messy)	C++14	100 / 100	3 ms	468 KiB

messy

#include<bits/stdc++.h>
#include "messy.h"

using namespace std;

vector<int> restore_permutation(int n, int w, int r) {
	string emp(n,'0');
	for(int i = n>>1; i; i>>=1){
		for(int j = 0; j < n; ++j){
			if((j/i)&1)continue;
			string s = emp;
			s[j] = '1';
			for(int k = 0; k < n; ++k){
				if(j/i == k/i || ((j/i)^1) == k/i)continue;
				s[k] = '1';
			}
			add_element(s);
		}
	}
	compile_set();

	vector<vector<int>> A[2];

	vector<int> v(n);
	iota(v.begin(),v.end(),0);

	A[0].push_back(v);
	
	int b = __lg(n);
	for(int i = 0; i < b; ++i){
		A[1].clear();
		for(int j = 0; j < (1<<i); ++j){
			vector<int> F,S;
			string cu = emp;
			for(int k = 0; k < (1<<i); ++k){
				if(j == k)continue;
				for(auto x : A[0][k])cu[x] = '1';
			}
			for(auto x : A[0][j]){
				string s = cu;
				s[x] = '1';
				if(check_element(s))F.push_back(x);
				else S.push_back(x);
			}
			A[1].push_back(F);
			A[1].push_back(S);
		}
		swap(A[1],A[0]);
	}
	vector<int> ret(n);
	for(int i = 0; i < n; ++i){
		ret[A[0][i][0]] = i;
	}

    return ret;
}

• Subtask 1: 20 / 20
• Subtask 2: 18 / 18
• Subtask 3: 11 / 11
• Subtask 4: 21 / 21
• Subtask 5: 30 / 30