import kotlinx.coroutines.delay
import kotlinx.coroutines.launch
import kotlinx.coroutines.runBlocking


fun main(args: Array<String>) {
    runBlocking {
        repeat(1000, fun (i: Int): Unit {
            launch {
                var res = doSomething(i)
                print(res)
            }
        })
    }

    print("over...")
}

suspend fun doSomething(i: Int): Int {
    delay(100L)
    return i * 10
}