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: n = int(input())
M = []
dp = [[None for i in range(100)] for i in range(100)]

def calcMatrix(i,j):
    #print(i,j)
    if i == j:
        dp[i][j] = 0
    elif i == j-1:
        dp[i][j] = M[i]*M[i+1]*M[i+2]
    else:
        for k in range(j-i):
            #print(i,j,k)
            #print(dp[i][i+k])
            #print(dp[i+k+1][j])
            #print(M[i]*M[k+1]*M[j])
            current = dp[i][i+k] + dp[i+k+1][j] + M[i]*M[i+k+1]*M[j+1]
            if k==0:
                dp[i][j] = current
            if current < dp[i][j]:
                dp[i][j] = current 

for i in range(n-1):
    Q = list(map(int,input().split()))
    M.append(Q[0])
Q = list(map(int,input().split()))
M.append(Q[0])
M.append(Q[1])
#print(M)

for i in range(n):
    for j in range(n-i):
        calcMatrix(j,i+j)
        #for k in range(10):
        # print(dp[k])
        # print()
print(dp[0][n-1])

Python: n = int(input())
r = [0] * n
c = [0] * n
for i in range(n):
    r[i], c[i] = map(int, input().split())

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

for i in range(2, n+1): #幅
    for j in range(0, n+1-i): #左端
        dp[j][j+i] = min([dp[j][k]+(r[j]*c[k-1]*c[j+i-1])+dp[k][j+i] for k in range(j+1,j+i)])

print(dp[0][n])

Python: N = int(input())
matrices = [tuple(map(int, input().split())) for _ in range(N)]
R, C = zip(*matrices)
dp = [[float('inf')] * N for _ in range(N)]
for i in range(N): dp[i][i] = 0
for l in range(1, N):
    for i in range(N-l):
        r, c = R[i], C[i+l]
        dp[i][i+l] = min(r * C[j] * c + dp[i][j] + dp[j+1][i+l] for j in range(i, i+l))
print(dp[0][N-1])

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])
if'__main__'==__name__:s()

Python: n=int(input())
m={}
p=[]

for i in range(n+1):
    m[i]=[0 for j in range(n+1)]
for i in range(n):
    tmp=list(map(int,input().split()))
    if i==0:
        p.append(tmp[0])
        p.append(tmp[1])
    else:
        p.append(tmp[1])

for l in range(2,n+1):
    for i in range(1,n-l+2):
        j=i+l-1
        m[i][j]=10000000
        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[1][n])

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 not 0<m[r][c]<=x:m[r][c]=x
 print(m[r][c])
if'__main__'==__name__:s()

Python: N = int(input())
for i in range(N):
    if i == 0:
        P = list(map(int, input().split()))
        continue
    P.append(int(input().split()[1]))

# dpテーブルの用意 minを取るときはinf埋めしておくと処理が楽になるしバグが見つかりやすい
INF = 2**32-1
dp = [[INF]*N for _ in range(N)]

# dpテーブルの初期化
# 対角成分0
for ij in range(N):
    dp[ij][ij] = 0
    
for l in range(1, N):
    for i in range(N-l):
        j = i+l
        for k in range(i,j):
            dp[i][j] = min(dp[i][k] + dp[k+1][j] + P[i]* P[j+1]*P[k+1], dp[i][j])
print(dp[0][-1])

Python: import sys
sys.setrecursionlimit(10**8)
def ii(): return int(sys.stdin.readline())
def mi(): return map(int, sys.stdin.readline().split())
def li(): return list(map(int, sys.stdin.readline().split()))
def li2(N): return [list(map(int, sys.stdin.readline().split())) for _ in range(N)]
def dp2(ini, i, j): return [[ini]*i for _ in range(j)]
def dp3(ini, i, j, k): return [[[ini]*i for _ in range(j)] for _ in range(k)]
#import bisect #bisect.bisect_left(B, a)
#from collections import defaultdict #d = defaultdict(int) d[key] += value
#from itertools import accumulate #list(accumulate(A))

N = ii()
l = li2(N)


'''
# メモ化再帰
dp = dp2(-1, N, N)
def rec(i, j):
    if dp[i][j] != -1:
        return dp[i][j]
    if i == j:
        dp[i][j] = 0
        return 0
    if j-i == 1:
        dp[i][j] = l[i][0] * l[i][1] * l[j][1]
        return dp[i][j]
    res = float('inf')
    for k in range(i, j):
        res = min(res, rec(i, k) + rec(k+1, j) + l[i][0] * l[k+1][0] * l[j][1])
    dp[i][j] = res
    return res

print(rec(0, N-1))
'''

# 2次元DP

dp = dp2(float('inf'), N, N)

for i in range(N):
    dp[i][i] = 0

for h in range(1, N):
    for i in range(N):
        if i+h < N:
            if h == 1:
                dp[i][i+h] = l[i][0] * l[i][1] * l[i+h][1]
            else:
                #dp[i][i+h] = dp[i][i+h-1] + l[i][0] * l[i+h][0] * l[i+h][1]
                for r in range(i, i+h):
                    dp[i][i+h] = min(dp[i][i+h], dp[i][r]+dp[r+1][i+h]+l[i][0]*l[r+1][0]*l[i+h][1])
#print(dp)
print(dp[0][N-1])