Submission #746345

#	Time	Username	Problem	Language	Result	Execution time	Memory
746345		doowey	Brperm (RMI20_brperm)	C++17	13 / 100	3057 ms	1976 KiB

brperm

#include <bits/stdc++.h>
#include "brperm.h"

using namespace std;

typedef long long ll;
typedef pair<int, int> pii;

#define fi first
#define se second
#define mp make_pair

vector<char> S;

void init(int n, const char s[]) {
    for(int i = 0 ; i < n; i ++ ){
        S.push_back(s[i]);
    }
}

int query(int i, int k) {
    int sz = (1 << k);
    if(i + sz - 1 >= S.size()) return 0;
    vector<char> A(sz), B(sz);
    for(int j = 0 ; j < sz; j ++ ){
        A[j] = S[i + j];
        int f = 0;
        for(int p = 0; p < k ; p ++ ){
            if((j & (1 << p))){
                f |= (1 << (k - p - 1));
            }
        }
        B[f] = S[i + j];
    }

    return (A == B);
}

Compilation message (stderr)

brperm.cpp: In function 'int query(int, int)':
brperm.cpp:23:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |     if(i + sz - 1 >= S.size()) return 0;
      |        ~~~~~~~~~~~^~~~~~~~~~~

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