#include <bits/stdc++.h>

using namespace std;

ifstream fin("evaluare.in");
ofstream fout("evaluare.out");

string s;

int apl(int X, int Y, char Z) {
    if(Z == '+') return X + Y;
    if(Z == '-') return X - Y;
    if(Z == '*') return X * Y;
    return X / Y;
}

int prec(const char X) {
    if(X == '+' || X == '-') return 1;
    if(X == '*' || X == '/') return 2;
    return 0;
}

int evexp1(string X) {
    stack<int> nb;
    stack<char> op;
    for(int i = 0; i < X.size(); ++i) {
        if(X[i] == '(') op.push(X[i]);
        else if(isdigit(X[i])) {
            int nr = 0;
            while(i < X.size() && isdigit(X[i]))
                nr = nr * 10 + X[i] - '0', ++i;
            --i, nb.push(nr);
        } else if(X[i] == ')') {
            while(!op.empty() && op.top() != '(') {
                int nr1 = nb.top();
                nb.pop();
                int nr2 = nb.top();
                nb.pop();
                char ope = op.top();
                op.pop();
                nb.push(apl(nr2, nr1, ope));
            }

            if(!op.empty()) op.pop();
        } else {
            while(!op.empty() && prec(op.top()) >= prec(X[i])) {
                int nr1 = nb.top();
                nb.pop();
                int nr2 = nb.top();
                nb.pop();
                char ope = op.top();
                op.pop();
                nb.push(apl(nr2, nr1, ope));
            }
            op.push(X[i]);
        }
    }
    while(!op.empty()) {
        int nr1 = nb.top();
        nb.pop();
        int nr2 = nb.top();
        nb.pop();
        char ope = op.top();
        op.pop();
        nb.push(apl(nr2, nr1, ope));
    }
    return nb.top();
}

int evexp(string X) {
    stack<int> nbs;
    stack<char> ops;
    for(int i = 0; i < X.size(); ++i) {
        if(X[i] == '(') ops.push(X[i]);
        else if(X[i] == ')') {
            while(!ops.empty() && ops.top() != '(') {
                int nr1 = nbs.top();
                nbs.pop();
                int nr2 = nbs.top();
                nbs.pop();
                char ope = ops.top();
                ops.pop();
                nbs.push(apl(nr2, nr1, ope));
            }
            if(!ops.empty()) ops.pop();
        } else if(isdigit(X[i])) {
            int nr = 0;
            while(i < X.size() && isdigit(X[i]))
                nr = nr * 10 + X[i] - '0', ++i;
            --i, nbs.push(nr);
        } else {
            while(!ops.empty() && prec(ops.top()) >= prec(X[i])) {
                int nr1 = nbs.top();
                nbs.pop();
                int nr2 = nbs.top();
                nbs.pop();
                char ope = ops.top();
                ops.pop();
                nbs.push(apl(nr2, nr1, ope));
            }
            ops.push(X[i]);
        }
    }
    while(!ops.empty()) {
        int nr1 = nbs.top();
        nbs.pop();
        int nr2 = nbs.top();
        nbs.pop();
        char ope = ops.top();
        ops.pop();
        nbs.push(apl(nr2, nr1, ope));
    }
    return nbs.top();
}

int main()
{
    getline(fin, s), fout<<evexp(s);
    return 0;
}