let input = Int(readLine()!)! var index = 0 var buffer = [0]; for i in 1...2017 { index = ((index + input) % buffer.count) + 1 buffer.insert(i, at: index) } print(buffer[buffer.index(of: 2017)! + 1]) var last = 0 index = 0 for i in 1...50000000 { index = ((index + input) % i) + 1 if index == 1 { last = i } } print(last)