N = int(input())
summa = -1
for i in range(N):
    a, b, c, d, e = map(int, input().split())
    if summa != -1:
        prevSumma = summa
        summa = min(max(a + c, d + c), b + e)
        summa = min(prevSumma, summa)
    else:
        summa = min(max(a + c, d + c), b + e)
print(summa)