import * as fs from "fs"
let data = fs.readFileSync("inputday1.txt").toString()

data = data.replaceAll("one", "o1e")
data = data.replaceAll("two", "t2o")
data = data.replaceAll("three", "t3e")
data = data.replaceAll("four", "f4r")
data = data.replaceAll("five", "f5e")
data = data.replaceAll("six", "s6x")
data = data.replaceAll("seven", "s7n")
data = data.replaceAll("eight", "e8t")
data = data.replaceAll("nine", "n9e")

let sumNum = 0
let lines = data.split("\n")


for (let line of lines){
    let lineStr = ""
    for (let char of line){
        if(isNum(char)){
            lineStr += char
        }
    }
    let twoNum = lineStr[0] + lineStr[lineStr.length - 1]
    twoNum = parseInt(twoNum)
    sumNum += twoNum
}

console.log(sumNum)

function isNum(testchar){
    if (testchar == "1" || testchar == "2" || testchar == "3" || testchar == "4" || testchar == "5" || testchar == "6" || testchar == "7" || testchar == "8" || testchar == "9"){
        return testchar
    }
}