def process_string(s: str) -> int:
    ans = 0
    shift_flag = False

    for ch in s:
        if ch.isdigit():
            digit = int(ch)
            ans += digit - 1 if shift_flag else 9 - digit
        elif ch == '*':
            if not shift_flag:
                ans += 9
        elif ch == '-':
            if not shift_flag:
                ans += 9
            shift_flag = True
        elif ch == '+':
            if not shift_flag:
                ans += 9
            shift_flag = False

    return ans

def main():
    t = int(input())
    for _ in range(t):
        n, s = input().split()
        print(process_string(s))