P,U=print,max
def J():
	return map(int,input().split())
N,M=J()
H=list(J())
R=range(M)
Z,W=[[] for j in R],[[] for j in R]
for j in R:
	X,Y=J()
	X-=1
	Y-=1
	Z[j],W[j]=[X,Y],[Y,X]
Z.sort()
W.sort(reverse=1)
C,D,E,F=[-1]*N,[-1]*N,[-1]*N,[-1]*N
N-=1
C[0]=D[N]=0
for c,e,z in [C,E,Z],[D,F,W]:
	for x in z:
		X,Y=x[0],x[1]
		h=H[Y]-H[X]
		if c[X]>=0:
			if h>0:e[Y]=U(e[Y],c[X]+h)
			else:c[Y]=U(c[Y],c[X])
		if e[X]>=0 and h<0:c[Y]=U(c[Y],e[X])
P(U(C[N],E[N]))
P(U(D[0],F[0]))