题解 | #MP3光标位置#

const readline = require("readline");

const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout,
});
let total = 0;
let input = "";
rl.on("line", function (line: string) {
    if (total === 0) {
        total = parseInt(line, 10);
    } else {
        input = line;
    }
});
rl.on("close", () => {
    // 窗口坐标
    let x = 0;
    // 光标坐标
    let y = 0;
    input.split("").forEach((v) => {
        if (v === "U") {
            if (y === x) {
                x -= 1;
            }
            y -= 1;
        } else {
            if (x + 3 === y) {
                x += 1;
            }
            y += 1;
        }
        if (x === -1 || y === -1) {
            x = total - 1
            y = total - 1
        }
        if (x === total || y === total) {
            x = 0
            y = 0
        }
    });
    let result = []
    const length = Math.min(total, 4)
    if (x + 3 <= total-1) {
        result = Array.from(
            {length},
            (v, k) => x + k+1
        )
    } else {
        result = Array.from(
            {length},
            (v, k) => total-length+k+1
        )
    }
    console.log(result.join(' '))
    console.log(y + 1)
});