题目：

题解：

func minimumTotal(triangle [][]int) int {
    n := len(triangle)
    f := make([]int, n)
    f[0] = triangle[0][0]
    for i := 1; i < n; i++ {
        f[i] = f[i - 1] + triangle[i][i]
        for j := i - 1; j > 0; j-- {
            f[j] = min(f[j - 1], f[j]) + triangle[i][j]
        }
        f[0] += triangle[i][0]
    }
    ans := math.MaxInt32
    for i := 0; i < n; i++ {
        ans = min(ans, f[i])
    }
    return ans
}

func min(x, y int) int {
    if x < y {
        return x
    }
    return y
}