#include <iostream>

void out(int num, char last) {
    if (num > 4 || last == '#') {
        std::cout << "#" << last << std::hex << num << "#";
    } else {
        while(num--) {
            std::cout << last;
        }
    }
}

int main()
{
    char last;
    char cur;
    int num = 1;
    if (!std::cin.get(last)) {
        return 0;
    }
    while (std::cin.get(cur)) {
        if (cur == last) {
            ++num;
        } else {
            out(num, last);
            num = 1;
        }
        last = cur;
    }
    out(num, last);
}