#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int main() { int n,a[1001],min=100,cmin=100; cin>>n; for(int i=1;i<=n;i++){ cin>>a[i]; } for(int i=1;i<=n;i++){ if(a[i]<min){ min=a[i]; } } for(int i=1;i<=n;i++){ if(a[i]<cmin&&min<a[i]){ cmin=a[i]; } } cout<<cmin-min; return 0; }