file = open('3A.txt')
N, V, M = map(int, file.readline().split())
a = []
for x in file:
    km, k = map(int, x.split())
    a.append((km, k))
max_con = 0
max_tub = 0
for i in range(N):
    cur_con, cur_tub = 0, 0
    for j in range(N):
        r = abs(a[j][0] - a[i][0])
        if r <= M:
            cur_tub += a[j][1]
            cur_con += (a[j][1] + V - 1) // V
    if cur_tub > max_tub:
        max_tub = cur_tub
        max_con = cur_con
print(max_con)

file = open('3B.txt')
N, V, M = map(int, file.readline().split())
a = []
for x in file:
    km, k = map(int, x.split())
    a.append((km, k))
max_con = 0
max_tub = 0
a.sort()
l = r = 0
cur_tub = cur_con = max_tub = max_con = 0
for st in range(N):
    while r < N and a[r][0] - a[st][0] <= M:
        cur_tub += a[r][1]
        cur_con += (a[r][1] + V - 1) // V
        r += 1
    while a[st][0] - a[l][0] > M:
        cur_tub -= a[l][1]
        cur_con -= (a[l][1] + V -1) // V
        l += 1
    if cur_tub > max_tub:
        max_tub = cur_tub
        max_con = cur_con
print(max_con)