Submission #876558

#	Time	Username	Problem	Language	Result	Execution time	Memory
876558		MinaRagy06	Brperm (RMI20_brperm)	C++17	0 / 100	2 ms	2392 KiB

brperm

#include <bits/stdc++.h>
#include "brperm.h"
#ifdef MINA
#include "grader.cpp"
#endif
using namespace std;
#define ll long long
 
int rev(int x, int k) {
	int y = 0;
	for (int i = 0; i < k; i++) {
		y |= ((x >> (k - 1 - i)) & 1) << i;
	}
	return y;
}
char a[500'005];
int N;
void init(int n, const char s[]) {
	for (int i = 0; i < n; i++) {
		a[i] = s[i];
	}
	N = n;
}
int query(int i, int k) {
	int ok = 1;
	assert(i + (1 << k) - 1 < N);
	for (int j = i; j < i + (1 << k); j++) {
// 		assert(rev(j - i, k) + i < N && j < N);
		ok &= a[rev(j - i, k) + i] == a[j];
	}
	return ok;
}

• Subtask 1: 0 / 13
• Subtask 2: 0 / 37
• Subtask 3: 0 / 17
• Subtask 4: 0 / 33