No. For each i, the two inner loops take 1 + 2 + ... n (n terms) <= n + n + ... n (n terms) = n^2. However, the inner loops are run for each i from 1 to n.
I assume that the body of the innermost loop consisted of x = x + 1. As it is, the indentation may suggest that the innermost loop is empty and the assignment is done in the outermost loop.