Problem:
Score : 100 points

Problem Statement

An uppercase or lowercase English letter \alpha will be given as input.
If \alpha is uppercase, print A; if it is lowercase, print a.

Constraints

\alpha is an uppercase (A - Z) or lowercase (a - z) English letter.

Input

Input is given from Standard Input in the following format:

α

Output

If \alpha is uppercase, print A; if it is lowercase, print a.

Sample Input 1

B

Sample Output 1

A

B is uppercase, so we should print A.

Sample Input 2

a

Sample Output 2

a

a is lowercase, so we should print a.

Solution in Go (1.14.1) (judge verdict: Runtime Error)

package main
 
import (
  "fmt"
  "sort"
)
 
func main(){
  var K, N int
  p:=[100]int{}
  fmt.Scan(&K)
  fmt.Scan(&N)
  for i:=0;i<N;i++{
    fmt.Scan(&p[i])
  }
  sort.Slice(p, func(i, j int) bool { return p[i] < p[j] })
  sum:=0
  for j:=0;j<K;j++ {
    sum+=p[j]
  }
  fmt.Println(sum)
 
}