Submission #494374

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
494374	2021-12-15 10:55:43	jasen_penchev	Brperm (RMI20_brperm)	C++14	50 / 100	3074 ms	11120 KiB

brperm

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#include "brperm.h"
#include <iostream>
#include <string>
#define endl '\n'
using namespace std;
const int LOG = 20;
string str = "";
int mem[LOG + 5][(1ll << LOG) + 5];
void init(int n, const char s[])
{
    for (int i = 0; i < n; ++ i)
    {
        str += s[i];
    }
    for (int k = 0; k < 20; ++ k)
    {
        for (int i = 0; i < (1ll << k); ++ i)
        {
            int idx = 0;
            for (int j = 0; j < k; ++ j)
            {
                if ((i & (1ll << j))) idx += (1ll << (k - j - 1));
            }
            mem[k][i] = idx;
 
 
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Compilation message (stderr)

brperm.cpp: In function 'int query(int, int)':
brperm.cpp:39:26: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   39 |     if (pos + (1ll << k) > str.size()) return 0;
      |         ~~~~~~~~~~~~~~~~~^~~~~~~~~~~~

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