dates = {}

with open('input.txt') as f:
    for line in f:
        line = line.split()
        if len(line) < 3:
            continue
        date = s[0]
        time = s[1]
        price = int(s[2])
        if(date not in dates):
            dates[date] = []
        dates[date].append(price)

answer = 1
for date in dates:
    minmax = 1
    for i in range(len(dates[date])):
        for j in range(i + 1, len(dates[date])):
            minmax = max(minmax, dates[date][j] / dates[date][i])
    answer *= minmax
answer -= 1
answer *= 100
print(answer)