#include<bits/stdc++.h> using namespace std; int main() { int a,b[10001],maxn,minn; cin>>a; for(int i=1;i<=a;i++) { cin>>b[i]; if(i==1) { maxn=minn=b[i]; } } for(int i=1;i<=a;i++) { if(maxn<b[i]) { maxn=b[i]; } if(minn>b[i]) { minn=b[i]; } } cout<<maxn-minn; return 0; }