Submission #642703

#	Time	Username	Problem	Language	Result	Execution time	Memory
642703		TimDee	Brperm (RMI20_brperm)	C++17	0 / 100	4 ms	1908 KiB

brperm

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

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

int query(int ind, int k) {

    //++k;
    for (int i=ind; i<ind+(1<<k); ++i) {
        int j=0;
        for (int b=k-1; b>=0; --b) {
            j+=(((i-ind)>>b)&1)<<(k-1-b); 
        }
        if ((j+ind>=S.length()) || (i>=S.length())) exit(1);
        if (S[i]!=S[j+ind]) return false;
    }
    return true;

}

Compilation message (stderr)

brperm.cpp: In function 'int query(int, int)':
brperm.cpp:18:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |         if ((j+ind>=S.length()) || (i>=S.length())) exit(1);
      |              ~~~~~^~~~~~~~~~~~
brperm.cpp:18:38: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |         if ((j+ind>=S.length()) || (i>=S.length())) exit(1);
      |                                     ~^~~~~~~~~~~~

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