def main():
    import sys
    s = sys.stdin.readline().strip()
    n = len(s)
    if n == 0:
        print(-1)
        return
    
    # Precompute matching parentheses positions
    match = [0] * n
    stack = []
    for i in range(n):
        if s[i] == '(':
            stack.append(i)
        else:
            if stack:
                j = stack.pop()
                match[j] = i
                match[i] = j
    
    # dp[i] will store the Grundy number for the substring starting at index i
    dp = [0] * (n + 1)
    
    for i in range(n - 1, -1, -1):
        if s[i] == '(':
            j = match[i]
            inner_grundy = dp[i + 1]
            rest_grundy = dp[j + 1]
            dp[i] = (inner_grundy + 1) ^ rest_grundy
    
    grundy = dp[0]
    if grundy != 0:
        print(0)
    else:
        print(1)

if __name__ == '__main__':
    main()