#include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
bool cmp(char a, char b) { return a < b; }
int main() {
    char buff[100000];
    cin >> buff;
    for (int i = 0; buff[i] != '\0'; i++) {
        if (buff[i] < 58) {
            vector<char> a;
            a.pushback(buff[i]);
        }
        if (buff[i] > 58 && buff[i] < 91) {
            vector<char> b;
            b.pushback(buff[i]);
        }
        if (buff[i] > 91) {
            vector<char> c;
            c.pushback(buff[i]);
        }
    }
    sort(a.begin(), a.end(), cmp);
    for (int i = 0; i < a.size(); i++) cout << a[i];
    sort(c.begin(), c.end(), cmp);
    for (int i = 0; i < c.size(); i++) cout << c[i];
    sort(b.begin(), b.end(), cmp);
    for (int i = 0; i < b.size(); i++) cout << b[i];
    return 0;
}

/sandbox/1/a.cpp: In function 'int main()':
/sandbox/1/a.cpp:14:15: error: 'class std::vector<char>' has no member named 'pushback'; did you mean 'push_back'?
             a.pushback(buff[i]);
               ^~~~~~~~
               push_back
/sandbox/1/a.cpp:18:15: error: 'class std::vector<char>' has no member named 'pushback'; did you mean 'push_back'?
             b.pushback(buff[i]);
               ^~~~~~~~
               push_back
/sandbox/1/a.cpp:22:15: error: 'class std::vector<char>' has no member named 'pushback'; did you mean 'push_back'?
             c.pushback(buff[i]);
               ^~~~~~~~
               push_back
/sandbox/1/a.cpp:25:10: error: 'a' was not declared in this scope
     sort(a.begin(),a.end(),cmp);
          ^
/sandbox/1/a.cpp:27:10: error: 'c' was not declared in this scope
     sort(c.begin(),c.end(),cmp);
          ^
/sandbox/1/a.cpp:29:10: error: 'b' was not declared in this scope
     sort(b.begin(),b.end(),cmp);
          ^