export default function balancedStringSplit(s: string): number {
    let ans = 0,
        d = 0;
    for (let i = 0; i < s.length; ++i) {
        const ch = s[i];
        if (ch === "L") {
            ++d;
        } else {
            --d;
        }
        if (d === 0) {
            ++ans;
        }
    }
    return ans;
}