#include <stdio.h> #include <stdlib.h> int main() { int N, K, i; int *n; scanf("%d", &N); scanf("%d", &K); n = (int*)malloc(sizeof(int)*N); for (i=0; i<N; i++) scanf("%d", n+i); int min = n[0]; int max = n[0]; for (i=1; i<N; i++) { if (n[i] < min) { min = n[i]; continue; } if (max < n[i]) { max = n[i]; continue; } } printf("%d\n", max-min); return 0; }