#include <iostream>
#include <string>
#include <sstream>

using namespace std;
typedef char type;

struct elem{
    elem* l = nullptr;
    elem* r = nullptr;
    type atom;
};


void make_space(string& str){
    for (int i = 0; i < str.size(); i++){
        if (str[i + 1] != ' ' && str[i] != ' ') {
            str.insert(i + 1, " ");
            i++;
        }
    }
}


elem* create_left(elem* bin_tree, type atom){
    elem* push = new elem;

    bin_tree->l = push;
    bin_tree = bin_tree->l;
    bin_tree->atom = atom;

    return bin_tree;
}


elem* create_right(elem* bin_tree, type atom){
    elem* push = new elem;

    bin_tree->r = push;
    bin_tree = bin_tree->r;
    bin_tree->atom = atom;

    return bin_tree;
}

//(a (b (d #(h # #))(e # #))(c (f (i # #)(j # #))(g #(k (l # #) #))))
elem* create_bin_tree(elem* tree, istringstream& stream, bool init) {

    if (init){
        tree = new elem;
    }


    char x;
    elem* cur = tree;
    stream >> x;

    if (x == '('){

        stream >> x;
        if (init){
            tree->atom = x;
            init = false;
            create_bin_tree(tree, stream, init);
        }else {
            tree = create_left(cur, x);
            create_bin_tree(tree, stream, init);
        }
    }
    if (x == '#'){
        stream >> x;
        if (x == '('){
            stream >> x;
            tree = create_right(cur, x);
            create_bin_tree(tree, stream, init);
        }
    }
    stream >> x;
    if (x == ')'){
        return nullptr;
    }
    if (x == '('){
        stream >> x;
        tree = create_right(cur, x);
        create_bin_tree(tree, stream, init);
    }
    stream >> x;
    return cur;
}


int main(){
    string str_bin_tree1;
    char x;
    elem* bin_tree1 = nullptr;

    getline(cin, str_bin_tree1);

    make_space(str_bin_tree1);
    istringstream stream1(str_bin_tree1);

    bin_tree1 = create_bin_tree(nullptr, stream1, true);

    return 0;
}

//(a (b (d #(h # #))(e # #))(c (f (i # #)(j # #))(g #(k (l # #) #))))