Submission #1228763

#	Time	Username	Problem	Language	Result	Execution time	Memory
1228763		PenguinsAreCute	Broken Device (JOI17_broken_device)	C++17	0 / 100	0 ms	320 KiB

Anna

#include "Annalib.h"
#include <bits/stdc++.h>
using namespace std;
void Anna( int N, long long X, int K, int P[] ){
	int perm[N];
	iota(perm,perm+N,0);
	mt19937 rng(42069);
	shuffle(perm,perm+N,rng);
	int inv[N];
	for(int i=0;i<N;i++)
		inv[perm[i]] = i;
	int cnt = 0;
	for(int i=0;i<=K;i++) {
		int l = (i ? inv[P[i-1]] + 1 : 0);
		int r = (i < K ? inv[P[i]] - 1 : N - 1);
		if(l > r)
			continue;
		while(l + 2 <= r) {
			Set(perm[l], 1);
			Set(perm[l + 1], !!(X & (1LL << (cnt++))));
			Set(perm[l + 2], !!(X & (1LL << (cnt++))));
			l += 3;
		}
		while(l <= r)
			Set(perm[l++], 0);
	}
	for(int i=0;i<K;i++)
		Set(P[i], 0);
}

Bruno

#include "Brunolib.h"
#include <bits/stdc++.h>
using namespace std;
long long Bruno( int N, int A[] ){
	int perm[N];
	iota(perm,perm+N,0);
	mt19937 rng(42069);
	shuffle(perm,perm+N,rng);
	long long X = 0;
	int cnt = 0;
	for(int i=0;i<N;) {
		if(A[perm[i]]) {
			X |= A[perm[i+1]] * (1LL << (cnt++));
			X |= A[perm[i+2]] * (1LL << (cnt++));
			i += 3;
		} else
			i++;
	}
	return X;
}

• Subtask 1: 0 / 100