def main():
    N = int(input())
    V = list(map(int,input().split()))
    before = [0 , 0]
    dp = [0, 0]
    for i in V:
        dp[0] = max( before[0] , before[1] )
        dp[1] = before[0] + i
        before = dp[:]
    print(dp)

if __name__ == "__main__":
    main()