题解 | 牛牛学数列2
牛牛学数列2
https://www.nowcoder.com/practice/fc72951f52984f3abd286d82eeffacba
package main
import (
"fmt"
)
func main() {
var n int
fmt.Scan(&n)
sum := 0.0
for i := 1; i <= n; i++ {
sum += 1 / float64(i)
}
fmt.Printf("%.6f", sum)
}
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