#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 a[10000],max=-1,min=10000,m; cin>>m; for(int i=1;i<=m;i++){ cin>>a[i]; if(a[i]>max){ max=a[i];} if(a[i]<min){ min=a[i];}} cout<<max-min; return 0; }