Submission #457973

#	Time	Username	Problem	Language	Result	Execution time	Memory
457973		myvaluska	Palindrome-Free Numbers (BOI13_numbers)	C++14	58.33 / 100	1100 ms	292 KiB

numbers

// palindromefree.cpp : This file contains the 'main' function. Program execution begins and ends there.
//
 
#include <iostream>
#include <string>
using namespace std;
long long int cifra[20];
int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    long long int a;
    long long int b;
    cin >> a;
    cin >> b;
    long long int palfree = 0;
    cifra[0] = 1;
    for (int i = 1; i < 19; i++)
    {
        cifra[i] = cifra[i - 1];
        cifra[i] *= 10;
    }
    for (long long int i = a; i <= b;)
    {
        string s;
        s = to_string(i);
        s += 's';
       long long int palindrom = -37;
      int dlz=s.size()-1;
        for (int j = 0; j < s.size()-2; j++)
        {
            if (s[j] == s[j + 1])
            {
                palindrom =s.size()-(j+1)-2;
                break;
            }
            else if (s[j] == s[j + 2])
            {
                palindrom = s.size() - (j + 2)-2;
                break;
            }
        }
        if (palindrom == -37)
        {
            palfree += 1;
            palindrom = 0;
        }
        else
        {
        
        }
        i = (i / cifra[palindrom] * cifra[palindrom]) + cifra[palindrom];
    }
    cout << palfree << "\n";
    //std::cout << "Hello World!\n";
}
 
// Run program: Ctrl + F5 or Debug > Start Without Debugging menu
// Debug program: F5 or Debug > Start Debugging menu
 
// Tips for Getting Started: 
//   1. Use the Solution Explorer window to add/manage files
//   2. Use the Team Explorer window to connect to source control
//   3. Use the Output window to see build output and other messages
//   4. Use the Error List window to view errors
//   5. Go to Project > Add New Item to create new code files, or Project > Add Existing Item to add existing code files to the project
//   6. In the future, to open this project again, go to File > Open > Project and select the .sln file

Compilation message (stderr)

numbers.cpp: In function 'int main()':
numbers.cpp:30:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |         for (int j = 0; j < s.size()-2; j++)
      |                         ~~^~~~~~~~~~~~
numbers.cpp:29:11: warning: unused variable 'dlz' [-Wunused-variable]
   29 |       int dlz=s.size()-1;
      |           ^~~

• Subtask 1: 25 / 25
• Subtask 2: 33.333333333333336 / 75