s = input()
s = s.split('\n')
m = 8
k = 1
for i in range(7):
    x = s[i]
    x = x.split()
    a = x[0], b = x[1]
    if (a+b)>m:
        m = a+b
        k = i+1
print(k)

有没有好心人愿意帮我看一眼，用jupyter模拟也打不进去7行数据啊orz