#include <iostream>
#include <cstddef>

class RangeError {
};

size_t CountValues(const char * data, size_t size){
    auto ptr = const_cast<char *> (data);
    auto len = 0;
    size_t count = 0;
    while (len < size) {
            ptr += sizeof(size_t) + *reinterpret_cast<size_t *>(ptr);
            len += (*reinterpret_cast<size_t *>(ptr) + sizeof(size_t));
            ++count;
    }
    if (len > size)
        throw RangeError();
    return count;
}