Submission #231363

#	Time	Username	Problem	Language	Result	Execution time	Memory
231363		islingr	Unscrambling a Messy Bug (IOI16_messy)	C++14	100 / 100	7 ms	640 KiB

messy

#include "messy.h"
#include <algorithm>
#include <vector>

using namespace std;

#define rep(i, a, b) for (auto i = (a); i < (b); ++i)

vector<int> restore_permutation(int n, int, int) {
	for (int z = n; z != 1; z >>= 1)
		for (int l = 0; l != n; l += z) {
			string s(n, '1');
			rep(i, l, l + z) s[i] = '0';
			rep(i, l, l + z / 2) {
				s[i] = '1';
				add_element(s);
				s[i] = '0';
			}
		}
 
	compile_set();

	vector<int> p(n); rep(i, 0, n) p[i] = i;
	for (int z = n; z != 1; z >>= 1) {
		vector<bool> v(n);
		for (int l = 0; l != n; l += z) {
			string s(n, '1');
			rep(i, l, l + z) s[p[i]] = '0';
			rep(i, l, l + z) {
				s[p[i]] = '1';
				v[p[i]] = check_element(s);
				s[p[i]] = '0';
			}
			partition(begin(p) + l, begin(p) + l + z, [&v](int x) { return v[x]; });
		}
	}

	vector<int> q(n);
	rep(i, 0, n) q[p[i]] = i;
	return q;
}

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