RT

package main

import "fmt"

const N int = 5e5 + 5

var n, m int

var A [N]int

func main() {
	fmt.Scanf("%d%d", &n, &m)
	for i := 1; i <= n; i++ {
		fmt.Scanf("%d", &A[i])
	}
	fmt.Println(n, m)
	for i := 1; i <= n; i++ {
		fmt.Print(A[i])
	}
	fmt.Println()
}

为什么读入

5 5
1 5 4 2 3

会输出

5 5
01542