Bikers Problem-Dynamic Programming

#1

this code gives negative output for n=87,can you tell the mistake ?

#include
using namespace std;

int main() {
int t,n;
cin>>t;
while(t–)
{
cin>>n;
long a[n+1];
a[0]=1;
a[1]=1;
for(int i=2;i<=n;i++)
{
a[i]=a[i-1] + (i-1)*a[i-2];
// cout<<a[i]<<endl;
}
cout<<a[n]<<endl;
}
return 0;
}

#2

hey @S19APP-PP0060, i compile your code here and it is giving positive answer only https://ide.codingblocks.com/s/110424

#3

Check for some value, say 84. It gives a negative output

#4

hey @S19APP-PP0060, yes it can give negative answer when maximum positive range of long is over.

#5

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