#include <bits/stdc++.h>

using namespace std;
typedef int ElemType;

class Stack{
private:
    ElemType *up;
    ElemType *base;
    ElemType length;
public:
    Stack();
    void push(ElemType);
    void pop();
    ElemType top(){return *(up - 1);}
    ElemType size(){return length;}
    bool
 
 empty(){return 0 == length;}
};

ElemType cal(ElemType a, ElemType b, char op);

int main()
{
    char st[1123];
    while(cin >> st)
    {
        Stack Q;
        for(int i = 0; st[i]; i++)
        {
            if(st[i] == '#')
            {
                break;
            }
            if
 
(isdigit(st[i]))
            {
                Q.push(st[i] - '0');
            }
            else{
                int a = Q.top();
                Q.pop();
                int b = Q.top();
                Q.pop();
                int x = cal( b, a, st[i]);
                Q.push(x);
            }
        }
        cout
 
 << Q.top() << endl;
    }
    return 0;
}

Stack::Stack(){
    base = new ElemType;
    up = base;
    length = 0;
}

void Stack::push(ElemType x){
    *up++ = x;
    length++;
}

void Stack::pop(){
    up--;
    length--;
}

ElemType cal(ElemType a, ElemType b, char op){
    if(op == '+')
        return a + b;
    if(op == '-')
        return a - b;
    if(op == '*')
       return a * b;
    if(op == '/')
        return a / b;
    return 0;
}