import sys



def solve(H, g):
    n = len(H)
    dp = [[-1] * 2 for _ in range(n)]
    dp[0] = [0, 0]
    for x in range(n):
        hx = H[x]
        for y in g[x]:
            hy = H[y]
            up = 1 if hy > hx else 0
            d = max(0, hy - hx)
            for i in range(2):
                if dp[x][i] == -1: continue
                if i == 1 and up: continue
                dp[y][up] = max(dp[y][up], dp[x][i] + d)
    return max(dp[-1])




def main():
    input = sys.stdin.readline
    n, m = map(int, input().split())
    H = list(map(int, input().split()))
    g1 = [[] for _ in range(n)]
    g2 = [[] for _ in range(n)]
    n2 = n - 1
    for _ in range(m):
        x, y = map(lambda x: int(x) - 1, input().split())
        g1[x].append(y)
        g2[n2 - y].append(n2 - x)
    print(solve(H, g1))
    print(solve(H[::-1], g1))



if __name__ == '__main__':
    main()