#include
using namespace std;
int main()
{
int n,i,k,count=0;
cin>>n>>k;
int a[n];
for(i=0;i<n;i++)
{
cin>>a[i];
}
for(i=0;i<n;i++)
{
if(a[i]==k)
{
count++;
}
}
if(count==1||count>1)
{
cout<<count<<endl;
}
else
{
cout<<"-1"<<endl;
}
return 0;
}
CAN someone tell me my mistake .The compiler says wrong answer