给出下列【代码】注释标注的代码的输出结果。 class Computer { static long getSum(int a,int n){ long sum = 0,item = a; for(int i=1;i<=n;i++) { sum = sum+item; item = item*10+a; } return sum; } } public class E { public static void main(String args[]) { long m = Computer.getSum(1,5); long n = Computer.getSum(2,3); System.out.printf("%d:%d",m,n); //【代码】 } }