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function minCost(costs: number[][]): number {    const n = costs.length;
    let dp = costs[0];
    for (let i = 1; i < n; i++) {        const dp2: typeof dp = [];        for (let j = 0; j < 3; j++) {            const min = Math.min(dp[(j + 1) % 3], dp[(j + 2) % 3]);            dp2.push(min + costs[i][j]);        }        dp = dp2;    }
    return Math.min(...dp);}export default minCost;