#include <iostream>
#include <string>
#include <regex>
 
std::string rr(const std::string& s) {
    if (s.empty()) return s;
 
    std::string c;
    int cnt = 1;
    for (size_t i = 1; i < s.length(); ++i) {
        if (s[i] == s[i - 1]) {
            cnt++;
        } else {
            c += s[i - 1] + std::to_string(cnt);
            cnt = 1;
        }
    }
    c += s.back() + std::to_string(cnt);
 
    if (c.length() < s.length()) return c;
 
    std::regex pattern("([A-Za-z])1(?!\\d)");
    std::string fc = std::regex_replace(c, pattern, "$1");
    if (fc.length() < s.length()) return fc;
 
    return s;
}
 
int main() {
    std::string input;
    std::cin >> input;
    std::cout << rr(input) << std::endl;
    return 0;
}
 

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

S0tLS0tLS0tLS0tLS0tLS0tLS0tLUVdFUlRZVUlPUEFTREZHS0taWEM=

KKKKKKKKKKKKKKKKKKKKKQWERTYUIOPASDFGKKZXC