#import<atcoder/all>
int n,i,a[9876],d=2e9,c,z=1;main(){scanf("%d",&n);for(;i<n;i++){scanf("%d",a+i);i&&(a[i-1]-=a[i]);}for(i=0;i<n-1;i++)if(a[i]-d){d=a[i];z=z>c?z:c;c=2;}else c++;printf("%d\n",z=z>c?z:c);}