输入样例
3 7417输出样例
pat import java.util.Scanner; public class Main{ public static void main(String[] args){ Scanner input = new Scanner(System.in); int n = input.nextInt(); int m = input.nextInt(); String s =""; int i =0; for( i = 0; i < n; i++) { s += "a"; } double t = Math.pow(26,n); int q = (int)t - m; char c [] = new char [6]; for(i = 0; i < n; i++){ c[i] = （char）(97 + q % 26); q = q / 26; } for(int j = i-1; j>=0; j-- ){ System.out.print(c[j]); } } }