#include<bits/stdc++.h> using namespace std; int main() { int a,b,max = -1,min = 999999, ans; //gfhghfdhbhd cin >> a; for(int i = 1;i <= a ;i++){ cin >> b; if(b > max) max = b; if(b < min) min = b; } cout << max - min; return 0; }