Problem 11: Write a complete Go program whose main function spawns a chain of n goroutines and synchronizes them, without busy waiting, so that they cooperatively alternate printing ping pong to standard error, where n is given as a command-line argument. Each line must be printed to standard error by a different goroutine, and no goroutine must print more than once. For instance, go run PingPongChain. go 10 1 ping // printed by goroutine1 pong // printed by goroutine 2 3 ping // printed by goroutine 3 4 pong// printed by goroutine 5 ping //printed by goroutine pong // printed by goroutine 6 7 ping /l printed by goroutine 7 // printed by goroutine8 9 ping // printed by goroutine'9 10 pong // printed by goroutine 1 Your program must not contain any race conditions. Do not give more than 25 lines of code. Problem 11: Write a complete Go program whose main function spawns a chain of n goroutines and synchronizes them, without busy waiting, so that they cooperatively alternate printing ping pong to standard error, where n is given as a command-line argument. Each line must be printed to standard error by a different goroutine, and no goroutine must print more than once. For instance, go run PingPongChain. go 10 1 ping // printed by goroutine1 pong // printed by goroutine 2 3 ping // printed by goroutine 3 4 pong// printed by goroutine 5 ping //printed by goroutine pong // printed by goroutine 6 7 ping /l printed by goroutine 7 // printed by goroutine8 9 ping // printed by goroutine'9 10 pong // printed by goroutine 1 Your program must not contain any race conditions. Do not give more than 25 lines of code