题解 | #坐标移动#

const readline = require('readline');

const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout
});


let star = [0, 0]
let regex = /^[A-Z]{1}\d+$/
rl.on('line', function (line) {
    let op_arr = line.split(';');
    op_arr.map((item) => {
        if (regex.test(item)) {
            switch (item[0]) {
                case 'A':
                    star[0] -= Number(item.slice(1));
                    break;
                case 'D':
                    star[0] += Number(item.slice(1));
                    break;
                case 'W':
                    star[1] += Number(item.slice(1));
                    break;
                case 'S':
                    star[1] -= Number(item.slice(1));
                    break;
                default:
                    break;
            }

        }
    })
    console.log(star.join(','))
});