Untitled

function countWords(sentence, n, words) {
    let map1 = new Map();
    for (let i = 0; i < n; i++) {
        // if (!map1.has(words[i])) {
            map1.set(words[i], 1);
        // }
    }
    //iterating
    let i = 0;
    let j = 0;
    let count = 0;
    while (j < sentence.length) {
        let temp = "";
        if (!(sentence.charCodeAt(j) === 32)) {
            j++;
        } else if (j === sentence.length - 1) {
            temp = sentence.substring(i, j + 1);
            if (map1.has(temp)) {
                count++;
                map1.delete(temp);
            }
        } else {
            temp = sentence.substring(i, j)
            j++;
            i = j;
            if (map1.has(temp)) {
                count++;
                map1.delete(temp);
            }
        }
    }
    return count;
}

function main() {

    let sentence = readLine();
    let n = parseInt(readLine());

    let temp = readLine();
    let words = temp.split(' ');

    let res = countWords(sentence, n, words);

    console.log(res);

}