package main

import "fmt"

func main() {
    // Get the number of levels in the pyramid from the user
    var levels int
    fmt.Print("Enter the number of levels: ")
    fmt.Scan(&levels)

    // Iterate over each level in the pyramid
    for i := 0; i < levels; i++ {
        // Print the padding for the level
        for j := 0; j < levels-i-1; j++ {
            fmt.Print(" ")
        }

        // Print the characters for the level
        for j := 0; j <= i; j++ {
            if j == 0 {
                // Print the first character in the level
                fmt.Print(string('A' + i))
            } else {
                // Print the remaining characters in the level
                fmt.Print(string('A' + i - 1))
            }
        }

        // Print a newline at the end of the level
        fmt.Println()
    }
}