const fs = require('fs')

let data = JSON.parse(fs.readFileSync('./Day 2/data.json'))

let invalid = []

function find_occurences(str, char_to_count) {
    return str.split(char_to_count).length - 1;
}
async function main() {

    for (let index = 0; index < data.length; index++) {
        const element = data[index];
        let info = element[0].split(' ')
        let info2 = info[0].split('-')
        let count = await find_occurences(element[1], info[1])
        if (count >= info2[0]) {
            if (count <= info2[1]) {
                // console.log('valid')
            } else {
                invalid.push(element)
            }
        } else {
            invalid.push(element)
        }
        // console.log('valid')
    }
    let answer = data.length - invalid.length
    console.log(answer)
}

main()