#include <iostream>
#include <regex>
using namespace std;
int main() {
// your code goes here
int count=0;
wstring txt=L"Hola, cómo estás";
//wstring txt=L""
wregex rx( L"[a-zA-ZñÑáéíóúÁÉÍÓÚ]" );
for( wsregex_iterator it( txt.cbegin(), txt.cend(), rx ); it!=wsregex_iterator();
++it ) count++;
cout << count << endl;
return 0;
}
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