#include <iostream>
#include <fstream>

using namespace std;

struct Stiva
{
    int a[1001], top;

    void Init()
    {top = -1;}

    int Empty()
    {
        if(top == -1) return 1;
        return 0;
    }

    void Push(int x)
    {a[++top] = x;}

    void Pop()
    {if(!Empty()) top--;}

    int Top()
    {return a[top];}

};

int main()
{
    char s[1001], i;
    Stiva st;

    ifstream fin("paranteze.in");
    fin >> s;
    fin.close();

    for(i = 0; s[i] != 0; i++)
    {
        if(s[i] == '(')
            st.Push(i);
        else
        {
            cout << st.Top() << "\n";
            st.Pop();
        }
    }

    return 0;
}