Problem: One very experienced problem writer decided to prepare a problem for April Fools Day contest. The task was very simple - given an arithmetic expression, return the result of evaluating this expression. However, looks like there is a bug in the reference solution...

Input

The only line of input data contains the arithmetic expression. The expression will contain between 2 and 10 operands, separated with arithmetic signs plus and/or minus. Each operand will be an integer between 0 and 255, inclusive.

Output

Reproduce the output of the reference solution, including the bug.

Examples

Input

8-7+6-5+4-3+2-1-0


Output

4


Input

2+2


Output

-46


Input

112-37


Output

375

Solution (in CPP):

Solution:
#include <bits/stdc++.h>
using namespace std;
int main() {
  ios_base::sync_with_stdio(0);
  cin.tie(0);
  int a, ans;
  char oper;
  cin >> ans;
  while (cin >> oper >> a) {
    if (oper == '+')
      ans += a - (a < 10 ? 50 : a < 100 ? 500 : 5000);
    else
      ans -= a - (a < 10 ? 30 : a < 100 ? 300 : 3000);
  }
  cout << ans << endl;
}