Submission #642741

#	Time	Username	Problem	Language	Result	Execution time	Memory
642741		TimDee	Brperm (RMI20_brperm)	C++17	50 / 100	3087 ms	1648 KiB

brperm

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

char S[(int)1e5+10];
int n;
void init(int N, const char s[]) {
    n=N;
    for (int i=0; i<n; ++i) S[i]=s[i];
}

int rev(int x, int k) {
    int ret=0;
    for (int b=k-1; b>=0; --b) {
        ret+=((x>>b)&1)<<(k-1-b);
    }
    return ret;
}

int query(int ind, int k) {

    if (ind + (1ll<<k) -1 >=n) return false;
    for (int i=ind; i<ind+(1ll<<k); ++i) {
        int j=rev(i-ind,k);
        //if ((j+ind>=S.length()) || (i>>S.length())) return false;
        //cout<<i<<' '<<j+ind<<'\n';
        if (S[i]!=S[j+ind]) return false;
    }
    return true;

}

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