【HDU】1562 Guess the number

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

 

    代码：

#include 

int main() {
    int n,a,b,c,i;
    scanf("%d",&n);
    while (n--) {
        scanf("%d %d %d",&a,&b,&c);
        int flag=0;
        for ( i=1000; i<=9999; i++) {
            if (i%a==0&&(i+1)%b==0&&(i+2)%c==0) {
                printf("%d\n",i);
                flag=1;
                break;
            }
        }
        if (flag==0) {
            printf("Impossible\n");
        }
    }
    return 0;
}