n = eval(input())
res = 0
for i in range(1,n+1):
wi,scorei = map(int,input().split())
res = res + wi*scorei
y = max(0,res)
print(y)
n = eval(input())
res = 0
for i in range(1,n+1):
wi,scorei = map(int,input().split())
res = res + wi*scorei
y = max(0,res)
print(y)