Can you tell me which test case is failing?

I am wrting solutiong for https://www.codechef.com/problems/M31 but it gives wrong answer. Can you tell me which test case is failing?
Here is my code: https://ideone.com/z7XeSX1

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#include
using namespace std;

int main() {
int y={700},x;
float s;
cin>>x;
if(x%5==0)
{

   if(y>=(x+0.5))
   {
       s=y-(x+0.5);
       cout<<"avilable balance:"<<s;
   }
  
  
  else
   {
       cout<<"withdraw balance more than avilable balance:";
   }}
   else{
    cout<<"not multipal of 5";
}
   


return 0;

}