HDOJ(HDU) 1562 Guess the number(水题，枚举就行)

Problem Description
Happy new year to everybody!
Now, I want you to guess a minimum number x betwwn 1000 and 9999 to let
(1) x % a = 0;
(2) (x+1) % b = 0;
(3) (x+2) % c = 0;
and a, b, c are integers between 1 and 100.
Given a,b,c, tell me what is the number of x ?

Input
The number of test cases c is in the first line of input, then c test cases followed.every test contains three integers a, b, c.

Output
For each test case your program should output one line with the minimal number x, you should remember that x is between 1000 and 9999. If there is no answer for x, output “Impossible”.

Sample Input
2
44 38 49
25 56 3

Sample Output
Impossible
2575

枚举就可以了。。

import java.util.Scanner;public class Main{    public static void main(String[] args) {        Scanner sc = new Scanner(System.in);        int t = sc.nextInt();        while (t-- > 0) {            int a = sc.nextInt();            int b = sc.nextInt();            int c = sc.nextInt();            boolean is = true;            int tm=a;            while(a<1000){                a=a+tm;            }            //注意！答案的范围是[1000,9999]            for (int i = a; i < 10000; i = i + tm) {                //此处注意i是加tm，而不是再加a了，因为a可能变了。                if ((i+1)%b==0&&(i+2)%c==0) {                    System.out.println(i);                    is = false;                    break;                }            }            if (is) {                System.out.println("Impossible");            }        }    }}