#!/usr/bin/env python
# -*- coding: utf-8 -*-


inputs = ["example.txt", "input.txt"]


def get_value(registers, register):
    if register not in registers:
        registers[register] = 0

    return registers[register]


def compare(registers, operation, register, b):
    result = False
    a = get_value(registers, register)

    if operation == '>' and a > b:
            result = True
    elif operation == '<' and a < b:
            result = True
    elif operation == '>=' and a >= b:
            result = True
    elif operation == '<=' and a <= b:
            result = True
    elif operation == '!=' and a != b:
            result = True
    elif operation == '==' and a == b:
            result = True

    return result


def solve(filename):
    registers = {}

    with open(filename, "r") as fp:
        for l in fp:
            reg1, op, val1, _, reg2, cond, val2 = l.rstrip().split()
            if compare(registers, cond, reg2, int(val2)):
                if op == 'inc':
                    registers[reg1] = (get_value(registers, reg1) + int(val1))
                elif op == 'dec':
                    registers[reg1] = (get_value(registers, reg1) - int(val1))

    biggest = 0
    for i in registers:
        if int(registers[i]) > biggest:
            biggest = int(registers[i])

    return biggest


for puzzle in inputs:
    print(puzzle, solve(puzzle))