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