1 #include<stdio.h>
2 #include<stdlib.h>
3 int main()
4 {
5 int minSize,maxSize;
6 int n,i,j,eat=0,result=0;
7 int fishSize[4000]={0};
8 scanf("%d",&minSize);
9 scanf("%d",&maxSize);
10 scanf("%d",&n);
11 for(i=0;i<n;i++)
12 scanf("%d",&fishSize[i]);
13 for(i=minSize;i<=maxSize;i++)
14 {
15 eat=0;
16 for(j=0;j<n;j++)
17 if(i!=0&&fishSize[j]!=0)
18
19 if((fishSize[j]>=i*2&&fishSize[j]<=i*10)||(i>=fishSize[j]*2&&i<=fishSize[j]*10))
20 {eat=1;
21 break;}
22 if(eat==0)
23 {
24 result++;
25 }
26
27 }
28 printf("%d",result);
29 }
