题解 | 乒乓球

const rl = require("readline").createInterface({ input: process.stdin });
var iter = rl[Symbol.asyncIterator]();
const readline = async () => (await iter.next()).value;

void (async function () {
    // Write your code here
    while ((line = await readline())) {
        let str = "";
        let wnum = 0;
        let lnum = 0;
        for (let i = 0; i < line.length; i++) {
            const char = line[i];
            if (char === "W") {
                if (++wnum >= 11 && wnum - lnum >= 2) {
                    console.log(wnum + ":" + lnum);
                    wnum = lnum = 0;
                }
            } else {
                if (++lnum >= 11 && lnum - wnum >= 2) {
                    console.log(wnum + ":" + lnum);
                    wnum = lnum = 0;
                }
            }
        }
        console.log(wnum + ":" + lnum + "\n");
        wnum = lnum = 0;
        for (let i = 0; i < line.length; i++) {
            const char = line[i];
            if (char === "W") {
                if (++wnum >= 21 && wnum - lnum >= 2) {
                    console.log(wnum + ":" + lnum);
                    wnum = lnum = 0;
                }
            } else {
                if (++lnum >= 21 && lnum - wnum >= 2) {
                    console.log(wnum + ":" + lnum);
                    wnum = lnum = 0;
                }
            }
        }
        console.log(wnum + ":" + lnum);
    }
})();