Submission #1217990

#	Time	Username	Problem	Language	Result	Execution time	Memory
1217990		KindaGoodGames	Brperm (RMI20_brperm)	C++20	0 / 100	1 ms	1856 KiB

brperm

#include "brperm.h"
#include<bits/stdc++.h>
using namespace std;

int rev(int a, int p){
    int r = 0;
    for(int i = 0; i < p; i++){
        int bit = (a & (1<<i)) > 0;
        r += (1<<(p-i-1)) * bit;
    }
    return r;
}
vector<char> str;
int n;
void init(int N, const char arr[]) {
  n = N;
  str.resize(N);
  for(int i = 0; i < n; i++){
    str[i] = arr[i];
  }
  return;
}

int query(int l, int k) {
    vector<char> res(n, '#');
    int p2 = 1 << k;
    int r = p2+l;
    bool valid = true;
    for(int i = l; i <= r; i++){
      int np = rev(i-l, k)+l;
      res[np] = str[i];

      if(res[np] != str[np]){
        valid = false;
      }
    }
    return valid;
}

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