import sys

# sys.setrecursionlimit(200005)
int1 = lambda x: int(x)-1
pDB = lambda *x: print(*x, end="\n", file=sys.stderr)
p2D = lambda x: print(*x, sep="\n", end="\n\n", file=sys.stderr)
def II(): return int(sys.stdin.readline())
def LI(): return list(map(int, sys.stdin.readline().split()))
def LLI(rows_number): return [LI() for _ in range(rows_number)]
def LI1(): return list(map(int1, sys.stdin.readline().split()))
def LLI1(rows_number): return [LI1() for _ in range(rows_number)]
def SI(): return sys.stdin.readline().rstrip()
dij = [(0, 1), (-1, 0), (0, -1), (1, 0)]
# dij = [(0, 1), (-1, 0), (0, -1), (1, 0), (1, 1), (1, -1), (-1, 1), (-1, -1)]
inf = (1 << 63)-1
# inf = (1 << 31)-1
# md = 10**9+7
md = 998244353

def RLE(s):
    kk = []
    vv = []
    for c in s:
        if kk and kk[-1] == c:
            vv[-1] += 1
        else:
            kk.append(c)
            vv.append(1)
    return kk, vv

n = II()
aa = LI()
bb = LI()

cc = [0]*n
for i in range(n-1):
    d = aa[i+1]-aa[i]
    e = abs(bb[i+1]-bb[i])
    cc[i] = d > e

kk, vv = RLE(cc)
ans = 0
for k, v in zip(kk, vv):
    if k == 0: continue
    ans += v*(v+1)//2

print(ans)