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- #include<stdio.h>
- #include<math.h>
- int main()
- {
- int a,b,i,count=0;
- scanf("%d %d",&a,&b);
- for(i=a;i<=b;i++)
- {
- if(a==0 && b==0){
- printf(" ");
- return 0;
- }
- else{
- if(ceil(sqrt(i))==floor(sqrt(i)))
- count++;
- }
- }
- printf("%d\n",count);
- return 0;
- }
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