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#include <cmath>
#include <algorithm>
#include <array>
#include <iostream>
#include <iterator>
#include <vector>
const std::array<const char *, 8> TICKS = {"▁", "▂", "▃", "▄", "▅", "▆", "▇", "█"};
const double EPSILON = 1e-8;
template<typename InputIterator, typename OutputIterator>
void sparkify(InputIterator first, InputIterator last, OutputIterator &out) {
auto minmax = std::minmax_element(first, last);
auto min = *minmax.first,
max = *minmax.second;
auto values_range = max - min;
if (values_range < EPSILON) {
std::fill_n(out, last - first, TICKS[0]);
} else {
auto coef = (TICKS.size() - 1) / values_range;
std::transform(first, last, out, [&](auto x) {
return TICKS[(size_t) round((x - min) * coef)];
});
}
}
int main()
{
std::istream_iterator<double> cin_it(std::cin), eos;
std::vector<double> values(cin_it, eos);
if (!std::cin.eof() && std::cin.fail()) {
std::cerr << "Parse error" << std::endl;
return 1;
}
if (values.empty()) {
return 0;
}
std::ostream_iterator<const char *> cout_it(std::cout);
sparkify(values.begin(), values.end(), cout_it);
std::cout << std::endl;
return 0;
}
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