2024

month = [31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31]
day = [0 for i in range(366)]
check = []
count = 0
list = [[], [], [], []]
lm = 0
ld = 0

def changetoday(M):
    global month
    sum = 0
    for i in range(M - 1):
        sum += month[i]
    return sum

n = int(input())
for i in range(n):
    sm, sd, em, ed = map(int, input().split())
    list[0].append(sm)
    list[1].append(sd)
    list[2].append(em)
    list[3].append(ed)

def ret(c):
    global n
    global lm
    global ld
    global count
    global check
    if c > 334:
        return count
    count += 1
    for i in range(n):
        if changetoday(list[0][i]) + list[1][i] <= c:
            check.append(i)
    if len(check) == 0:
        return 0
    else:
        m = 0
        for i in range(len(check)):
            s = changetoday(list[2][check[i]]) + list[3][check[i]]
            if s >= m:
                m = s
                k = i
        print(list[0][check[k]], "/", list[1][check[k]], " ~ ", list[2][check[k]], "/", list[3][check[k]])  #
        if i > 1 and len(check) > 1:
            if list[0][check[k]] == lm and list[1][check[k]] == ld:
                return 0
            lm = list[0][check[k]]
            ld = list[1][check[k]]
        return ret(m)
# \('^')/
#   |||
#   `  `
print( ret( 60))