#include <iostream>
using namespace std;
 
int letters_counted_in_text(std::wstring const&text)
{
    int count = 0;
    wstring abc = L"abcdefghijklmnñopqrstuvwxyzáéíóúABCDEFGHIJKLMNÑOPQRSTUVWXYZÁÉÍÓÚ";
 
    for (unsigned i = 0; i < text.length(); ++i)
        for (unsigned j = 0; j < abc.length(); ++j)
            if (text.at(i) == abc.at(j))
            {
                count++;
                j = abc.length();
            }
    return count;
}
 
int main()
{
    // your code goes here
    wstring test = L"Hola, cómo estás";
    cout << letters_counted_in_text(test);
 
    return 0;
}
 

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