UVa 622 Grammar Evaluation Solution

import re
def Main():
    s=int(input())
    pat=re.compile(r'(^\+|-|\(\+\d)')
    for i in range(s):
        t=input()
        if pat.search(t) is not None:
            print("ERROR")
        else:
            try:
                print(eval(t))
            except:
                print("ERROR")
if __name__=="__main__":
    Main()