#include <stdio.h> int main() { int n,a[100000],i,min=100,max=0; scanf("%d",&n); for(i=0;i<n;i++) { scanf("%d",&a[i]); if(min>a[i]) min=a[i]; if(max<a[i]) max=a[i]; } printf("%d",max-min); return 0; }