题目：

题解：

func nthSuperUglyNumber(n int, primes []int) int {
    dp := make([]int, n+1)
    m := len(primes)
    pointers := make([]int, m)
    nums := make([]int, m)
    for i := range nums {
        nums[i] = 1
    }
    for i := 1; i <= n; i++ {
        minNum := math.MaxInt64
        for j := range pointers {
            minNum = min(minNum, nums[j])
        }
        dp[i] = minNum
        for j := range nums {
            if nums[j] == minNum {
                pointers[j]++
                nums[j] = dp[pointers[j]] * primes[j]
            }
        }
    }
    return dp[n]
}

func min(a, b int) int {
    if a < b {
        return a
    }
    return b
}