class Solution:
    # @param A : tuple of integers
    # @return a list of integers
    def repeatedNumber(self, A):
        A = list(A)
        len_A = len(A)
        for i in range(len_A):
            if(A[abs(A[i])-1]<0):
                repeat = abs(A[i])
            else:
               A[abs(A[i])-1] = - A[abs(A[i])-1]
        A = list(map(abs, A))
        missing =  int((len_A/2*(len_A+1))- (sum(A) - repeat))
        return [repeat, missing]