import sys def solve(a,n,b=[]): for k in range(n): for i in range(n-k): j=i+k b.append(max(a[i:j+1])) return b if __name__ == "__main__": n = int(input().strip()) a = list(map(int, input().strip().split(' '))) b=solve(a,n,b=[]) result = solve(b,len(b),b=[]) print(result)