Patrick has an adjusted gross income of $120,000 in the current year. He donated $50,000 in cash to a public charity, capital gain property with a basis of $15,000 and a fair market value of $35,000 to a public charity, and publicly traded stock with a basis of $12,000 and a fair market value of $25,000 to a private nonoperating foundation. Patrick's deductible contribution for the current year is ______.