#include<bits/stdc++.h>
using namespace std;
int main()
{
long long n;
cin>>n;
long long ans=1e18;
long long arr[n];
for(int i=0;i<n;i++)cin>>arr[i];
for(int i=0;i<n;i++){
long long ans1=0;
long long mx=0;
for(int j=i-1;j>=0;j--){
long long x=arr[j];
if(x<mx){
ans1++;
mx=-arr[j];
}
else{
long long y=abs(mx);
long long z=(y/x)+1;
ans1+=z;
mx=-(z*x);
}
}
mx=0;
for(int j=i+1;j<n;j++){
long long x=arr[j];
if(x>mx){
ans1++;
mx=x;
}
else{
long long z=mx/x +1;
ans1+=z;
mx=(z*x);
}
}
ans=min(ans,ans1);
}
cout<<ans<<endl;
return 0;
}
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