Problem:
Score : 100 points

Problem Statement

You will turn on the air conditioner if, and only if, the temperature of the room is 30 degrees Celsius or above.

The current temperature of the room is X degrees Celsius. Will you turn on the air conditioner?

Constraints

-40 \leq X \leq 40

X is an integer.

Input

Input is given from Standard Input in the following format:

X

Output

Print Yes if you will turn on the air conditioner; print No otherwise.

Sample Input 1

25

Sample Output 1

No

Sample Input 2

30

Sample Output 2

Yes

Solution in Go (1.14.1) (judge verdict: Wrong Answer)

package main

import (
	"bufio"
	"fmt"
	"math"
	"os"
	"strconv"
)

var sc = bufio.NewScanner(os.Stdin)

func scanInt() int {
	sc.Scan()
	a, err := strconv.Atoi(sc.Text())
	if err != nil {
		fmt.Println(err)
	}
	return a
}
func scanFloat() float64 {
	sc.Scan()
	a, err := strconv.ParseFloat(sc.Text(), 64)
	if err != nil {
		fmt.Println(err)
	}
	return a
}
func scanInt2() (int, int) {
	return scanInt(), scanInt()
}
func scanFloat2() (float64, float64) {
	return scanFloat(), scanFloat()
}
func main() {
	sc.Split(bufio.ScanWords)

	N, D := scanInt2()
	var ans int
	for i := 0; i < N; i++ {
		var xy float64
		X, Y := scanFloat2()
		xx, yy := X*X, Y*Y
		var dd float64 = float64(D) * float64(D)
		if dd < xx || dd < yy {
			continue
		}
		xy = math.Sqrt(xx + yy)
		if xy <= float64(D) {
			ans++
		}
	}
	fmt.Println(ans)
}