my_input = open("inputs/input_3", "r").read().split("\n")

p1 = 0
read_sum = 0
for line in my_input:
    number, base = line.split()
    base = int(base)
    number = int(number, base)
    p1 += base
    read_sum += number

p2 = read_sum

p3 = ""
b65chars = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz!@#"
while read_sum > 64:
    rem = read_sum % 65
    read_sum = read_sum // 65
    p3 = b65chars[rem] + p3
p3 = b65chars[read_sum] + p3

print(p1)
print(p2)
print(p3)