const fs = require("fs")

let prev = null

let edges = {}

for (let line of fs.readFileSync(process.argv[2], "utf8").split(/\n/)) {

if (line.trim() == "}") prev = null

let m = /^\s*(\w+):/.exec(line)

if (!m) continue

let curr = m[1]

if (curr == "ctx") continue

if (prev) {

if (!edges[prev])

edges[prev] = []

if (edges[prev].indexOf(curr) < 0)

edges[prev].push(curr)

}

prev = curr

}

let visited = {}

let curr = {}

let res = []

function r(e) {

if (visited[e]) {

if (curr[e])

console.log("cycle: " + e)

return

}

visited[e] = true

curr[e] = true

for (let n of edges[e] || []) {

r(n)

}

curr[e] = false

res.push(e)

}

r("kind")

res.reverse()

let i = 1

let re = ""

for (let k of res) {

re += `${k}: ${i}, `

i++

}

console.log(re)