Sample Input
1 2 3 4 5
Sample Output
4

 1 #include<cstdlib>
 2 #include<cstdio>
 3 #include<cstring>
 4 #include<algorithm>
 5 #include<cmath>
 6 using namespace std;
 7 
 8 #define N 1200
 9 
10 int main()
11 {
12     int a,b,x,y,m,n,l,k=1;
13 
14     scanf("%d%d%d%d%d", &x,&y,&m,&n,&l);
15 
16     while(1)
17     {
18         a=x+k*m;
19         b=y+k*n;
20         if(a%l==b%l)
21         {
22             printf("%d\n", k);
23             break;
24         }
25         else
26         {
27             while(a%l==x&&b%l==y)
28             {
29                  printf("Impossible\n");
30                  return 0;///用break你就OLE了
31             }
32         }
33         k++;
34     }
35 
36     return 0;
37 }