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package main import ( "fmt" "time" ) func f(n int) int { if n <= 2 { return 1 } else { return f(n-1) + f(n-2) } } func main() { startTime := time.Now() for i := 0; i <= 100; i++ { fmt.Println(i, "-->", f(i)) } stopTime := time.Now() fmt.Println(startTime, stopTime) }