#include <iostream>
#include <stack>
using namespace std;

int main()
{
   unsigned char b[30000] = {0}; char *k = ",>,.<.";   
   unsigned char *x = b; stack<char *> y;
   while(*k && *k != EOF)
   {
    if(*k == '+') ++*x;
    if(*k == '-') --*x;
    if(*k == '>') ++x;
    if(*k == '<') --x;
    if(*k == ',') *x = cin.get();
    if(*k == '.') cout << *x;
    if(*k == '[') y.push(k + 1);
    if(*k == ']' && *x != 0) k = y.top();   
    else {
     if(*k == ']' && *x == 0) y.pop();
     k++;
    }
    fflush(stdin);
   }
   return 0;
}