Go: package main

/*
連鎖行列積
*/

import (
	"bufio"
	"bytes"
	"fmt"
	"log"
	"math"
	"os"
	"strconv"
	"strings"
)

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

type mem *[][]int

func main() {
	scanner := makeScanner(1024)
	n := eGetInt(scanner)
	p := make([]int, n+1)
	for i := 0; i < n; i++ {
		rowcol := eGetInts(scanner)
		p[i] = rowcol[0]
		p[i+1] = rowcol[1]
	}
	m := make([][]int, n)
	for i := 0; i < n; i++ {
		m[i] = make([]int, n)
	}
	// 初期値の格納
	for i := 0; i < n; i++ {
		for j := i; j < n; j++ {
			if i == j {
				m[i][j] = 0 //  同じ行列へのコストは当然0
			} else {
				m[i][j] = math.MaxInt64
			}
		}
	}

	// num : 行列の数. num == 1の場合は初期値0を格納ずみ
	for num := 2; num <= n; num++ {
		// s : スタート行列番号
		for s := 0; s+num <= n; s++ {
			// t : 終了行列番号
			t := s + num - 1
			// k : 仕切
			for k := s; k < t; k++ {
				m[s][t] = min(m[s][t], m[s][k]+m[k+1][t]+p[s]*p[k+1]*p[t+1])
			}
		}
	}
	fmt.Println(m[0][n-1])
}

////////////////////////////////////////////////////////////////////////////////
// ライブラリ
////////////////////////////////////////////////////////////////////////////////
func makeScanner(maxByte int) *bufio.Scanner {
	scanner := bufio.NewScanner(os.Stdin)
	scanner.Buffer(make([]uint8, 0, 8192), maxByte)
	return scanner
}
func makeWordScanner() *bufio.Scanner {
	scanner := makeScanner(8192)
	scanner.Split(bufio.ScanWords)
	return scanner
}
func eGetLine(r *bufio.Scanner) string {
	if r.Scan() {
		return r.Text()
	}
	err := r.Err()
	if err != nil {
		log.Fatal(err)
	}
	// EOF
	return ""
}
func eGetInt(r *bufio.Scanner) int {
	line := eGetLine(r)
	return eAtoi(line)
}
func eGetFields(r *bufio.Scanner) []string {
	line := eGetLine(r)
	return strings.Fields(line)
}
func eGetInts(r *bufio.Scanner) []int {
	fields := eGetFields(r)
	ints := make([]int, len(fields))
	for i := 0; i < len(ints); i++ {
		ints[i] = eAtoi(fields[i])
	}
	return ints
}
func eGetChars(r *bufio.Scanner) []string {
	line := eGetLine(r)
	return strings.Split(line, "")
}
func eAtoi(s string) int {
	n, err := strconv.Atoi(s)
	if err != nil {
		log.Fatal(err)
	}
	return n
}

type ints []int

func (s ints) String() string {
	var buf bytes.Buffer
	buf.WriteString("[")
	sep := ""
	for _, v := range s {
		buf.WriteString(fmt.Sprintf("%s%d", sep, v))
		sep = ", "
	}
	buf.WriteString("]")
	return buf.String()
}

func reverse(a ints) ints {
	r := make(ints, len(a))
	for i := 0; i < len(a); i++ {
		r[i] = a[len(a)-1-i]
	}
	return r
}
func max(a ints) (int, bool) {
	if len(a) == 0 {
		return 0, false
	}
	m := a[0]
	for _, e := range a {
		if e > m {
			m = e
		}
	}
	return m, true
}

// func min(a []int) int {
// 	m := a[0]
// 	for _, v := range a {
// 		if v < m {
// 			m = v
// 		}
// 	}
// 	return m
// }

func sum(a ints) int {
	if len(a) == 0 {
		return 0
	}
	sum := 0
	for _, e := range a {
		sum += e
	}
	return sum
}
func find(n int, a ints) int {
	for i, v := range a {
		if n == v {
			return i
		}
	}
	return -1
}

Python: INF = float('inf')


def main():
    n = int(input())
    p = [0 for _ in range(n+1)]

    for i in range(n):
        p1, p2 = map(int, input().split(' '))
        p[i-1], p[i] = p1, p2

    dp = [[0 for _ in range(n+1)] for _ in range(n+1)]

    for l in range(2, n+1):
        for i in range(1, n-l+2):
            j = i + l - 1
            dp[i][j] = INF
            for k in range(i, j):
                dp[i][j] = min(dp[i][j], dp[i][k] + dp[k+1][j] + p[i-1] * p[k] * p[j])
    print(dp[1][n])


if __name__ == "__main__":
    main()

Python: import math
n = int(input())
p1 = []
p = []
for i in range (n):
    p1.append(list(map(int, input().split())))
    p.append(int(p1[i][0]))

p.append(int(p1[i][1]))

m = [[] for i in range(n)];

for i in range(n):
    for j in range(n):
        m[i].append(0)

for l in range(2, n + 1):
    for i in range(n - l + 1):
        j = i + l - 1
        m[i][j] = 1000000000000000000000
        for k in range(i, j):
            m[i][j] = min(m[i][j], m[i][k] + m[k + 1][j] + p[i - 1] * p[k] * p[j])
print(m[0][5])

Python: def s():
 n=int(input())+1
 e=[input().split()for _  in[0]*~-n]
 p=[int(e[0][0])]+list(int(x[1])for x in e)
 m=[[0]*n for _ in[0]*n]
 for i in range(n):
  for r in range(n-i-1):
   c=r+i+1
   for j in range(r+1,c):
    x=m[r][j]+m[j][c]+p[r]*p[j]*p[c]
    if 1>m[r][c]or m[r][c]>x:m[r][c]=x
 print(m[r][c])
s()

Python: N = int(input())
rc = [list(map(int, input().split())) for _ in range(N)]

DP = [[(0, -1, -1)]*(N) for _ in range(N)]
DP[0] = [(0, r, c) for r, c in rc]

for i in range(1, N):
    for j in range(N-i):
        lis = []
        for k in range(i):
            s, r, c = DP[k][j]
            s2, r2, c2 = DP[i-k-1][j+k+1]
            lis.append((r*c*c2+s+s2, r, c2))
        DP[i][j] = min(lis)
print(DP[-1][0][0])

Python: def calc(p):
    n = len(p) - 1
    m = [[None for i in range(n + 1)] for j in range(n + 1)]
    for x in range(n):
        m[x][x] = 0
    for l in range(2, n + 1):
        for i in range(0, n - l + 1):
            j = i + l - 1
            m[i][j] = float("inf")
            for k in range(i, j):
                m[i][j] = min(m[i][j], m[i][k] + m[k + 1][j] + p[i - 1] * p[k] * p[j])
    return m

n = int(input())
p = []
for i in range(n):
    inp = list(map(int, input().split()))
    if i == 0:
        p.append(inp[0])
        p.append(inp[1])
    elif 0 < i < n - 1:
        p.append(inp[1])
    elif i == (n - 1):
        p.append(inp[1])

m = calc(p)
print(m[0][n - 1])

Python: import sys, copy

num = int(sys.stdin.readline())

if num==1:
    print(0)
    quit()
    
mm = list(map(int, sys.stdin.readline().split()))
for _ in range(num-1):
    mm.append(int(sys.stdin.readline().split()[1]))

used = [False] * num
seq = [0] * (num-2)
minv = 0
j=mm[1]
for i in mm[2:]:
    minv += i*j
    j=i
minv *= mm[0]    

def sequence(n, k, m, t):
    global minv, used, seq
    if k==m:
        t += mm[0]*mm[used[1:].index(False)+1]*mm[num]
        if minv>t:    minv = t
    else:
        for i in range(1,n+1):
            if used[i]: continue
            seq[m] = i
            used[i]=True

            l=i-1
            while l>0 and used[l]:     l-=1
            u=i+1
            while u<num and used[u]:   u+=1
            v = mm[l]*mm[i]*mm[u]
            if minv>t+v: sequence(n, k, m+1, t+v)
            used[i]=False

sequence(num-1, num-2, 0, 0)

print(minv)

Python: n = int(input())
A = [list(map(int, input().split())) for i in range(n)]

ans = [[None for i in range(n)] for j in range(n)]


# for文で動的計画法
def dp1(i, j):
    if ans[i][j] is not None:
        return ans[i][j]
    else:
        if i == j:
            ans[i][j] = 0
        else:
            ret = float('INF')
            for k in range(i, j):
                tmp = dp1(i, k) + A[i][0]*A[k][1]*A[j][1] + dp1(k+1, j)
                ret = min(ret, tmp)
            ans[i][j] = ret
        return ans[i][j]


print(dp1(0, n-1))

Python: INF = float('inf')
mm = [(-1,-1)]
n = int(input())
for _ in range(n):
    mm.append(tuple((map(int,input().split()))))

def scala(a,b,c):
    return mm[a][0] * mm[b][1] * mm[c][1] 

dp = [[INF for _ in range(n+1)] for _ in range(n+1)]
#init
for i in range(1,n):
    dp[i][i+1] = mm[i][0] * mm[i+1][1] * mm[i][1]
    dp[i][i] = 0
dp[-1][-1] = 0
#begin dp
for d in range(2,n):
    for l in range(1,n-d+1):
        r = l + d
        for m in range(l,r):
            dp[l][r] = min(dp[l][m] + dp[m+1][r] + scala(l,r,m), dp[l][r])
print(dp[1][n])
#for i in range(n+1):
#    print(dp[i])
#for d in range(2,n):
#    for l in range(1,n-d+1):
#        r = l + d
#        for m in range(l,r):
#            dp[l][r] = max(dp[l][m] + dp[m+1][r] + scala(l,r,m), dp[l][r])

#print(dp[1][n])
#for i in range(n+1):
#    print(dp[i])