# include<iostream> # include<cstring> # include<cmath> using namespace std; int main() { long long n,a[1000],i,j,x=0,min; cin>>n; for(i=0;i<n;i++){ cin>>a[i]; } min=abs(a[1]-a[0]); for(i=0;i<n;i++){ for(j=i+1;j<n;j++){ x=abs(a[i]-a[j]); if(x<min) min=x; } } cout<<min; return 0; }