package main

import "fmt"

func AddUpper() func(int) int {
	var n int = 10
	return func(x int) int {
		n = n + x
		return n
	}
}
func main() {

	f := AddUpper()
	fmt.Println(f(1))
	fmt.Println(f(2))
	fmt.Println(f(3))

}

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