day = 0

MAX = 0

MID = []

ONE =input().split()

TWO = input().split()

THREE =input().split()

FOUR = input().split()

FIVE = input().split()

SIX = input().split()

SEVEN = input().split()

count_1 = int(ONE[0]) + int(ONE[1])

count_2 = int(TWO[0]) + int(TWO[1])

count_3 = int(THREE[0]) + int(THREE[1])

count_4 = int(FOUR[0]) + int(FOUR[1])

count_5 = int(FIVE[0]) + int(FIVE[1])

count_6 = int(SIX[0]) + int(SIX[1])

count_7 = int(SEVEN[0]) + int(SEVEN[1])

hour = [count_1, count_2,count_3, count_4, count_5, count_6, count_7]

for i in range(len(hour)):

if(hour[i] <= 8):
    continue
if(hour[i] > 8):
    MID.append(hour[i])

MAX = MID[0]
for k in range(len(MID)):

if(MID[0] < MID[k]):
    MAX = MID[k]

count = hour.index(MAX)

day = count + 1

print(day)