#!/usr/bin/python3
from pprint import pprint

prog = []
acc = 0
ip = 0
with open("input") as fh:
    for ln in fh:
        op, arg = ln.split()
        prog.append((op, int(arg)))

pprint(prog)

seen = set()

while True:
    if ip in seen:
        print(acc)
        break;
    seen.add(ip)
    op = prog[ip][0]
    arg = prog[ip][1]
    print(acc, ip, op, arg)
    if op == "acc":
        acc += arg
        ip += 1
    elif op == "jmp":
        ip += arg
    elif op == "nop":
        ip += 1