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())
R = [0]*(n+1)
C = [0]*(n+1)
for u in range(n):
    R[u+1], C[u+1] = map(int, input().split())

INF = 10**18    
dp = [[INF]*(n+1) for _ in range(n+1)]
for i in range(1,n+1):
    dp[i][i] = 0
for l in range(1,n):
    for i in range(1,n+1-l):
        dp[i][i+l] = min(dp[i][k]+ dp[k+1][i+l] + R[i]*C[k]*C[i+l] for k in range(i,i+l))

print(dp[1][n])

Python: # coding: utf-8

INF = 1 << 60
n = int(input().rstrip())
r = [0 for _ in range(n+10)]
c = [0 for _ in range(n+10)]
# i番目の行列からj番目の行列までの最小値
dp = [[INF for _ in range(n+10)] for _ in range(n+10)]
for i in range(n):
    line = input().rstrip().split()
    r[i] = int(line[0])
    c[i] = int(line[1])
    
for i in range(n):
    dp[i][i] = 0

# 行列の距離が近い方から計算しなくてはいけない！
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][j], dp[i][k] + dp[k+1][j] + r[i]*c[k]*c[j])
            
print(dp[0][n-1])

Python: n = int(input())
m = [[0] * (n + 1) for _ in range(n + 1)]
z = [0] * (n + 1)
for i in range(n):
    z[i], z[i + 1] = map(int, input().split())
j = 0
for l in range(2, n + 1):
    for i in range(1, n - l + 2):
        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] + z[i - 1] * z[k] * z[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 1>m[r][c]or m[r][c]>x:m[r][c]=x
 print(m[r][c])
s()

Python: # [New] Matrix Chain Multiplication using Dynamic Programming Formula
# https://www.youtube.com/watch?v=_WncuhSJZyA

n = int(input())

P = []
a, b = [int(i) for i in input().split()]
P.append(a)
P.append(b)
for _ in range(n - 1):
    _, b = [int(i) for i in input().split()]
    P.append(b)

dp = [[None] * (n + 1) for _ in range(n + 1)]  # 1-indexed table

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

for r in range(2, n + 1):
    for i in range(1, n - r + 2):
        j = i + r - 1
        dp[i][j] = float("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][-1])

Python: n=int(input())
a= [list(map(int, input().split())) for i in range(n)]
a+=a
# dp[i][j]=iからjまでの区間連鎖行列積
INF=10**12
dp=[[INF]*(2*n+1) for i in range(2*n+1)]
ans=0
for i in range(n):
    for l in range(2*n-i):
        r=i+l
        if l==r:
            dp[l][r]=0
        else:
            for k in range(l,r):
                dp[l][r]=min(dp[l][k]+dp[k+1][r]+a[l][0]*a[k][1]*a[r][1],dp[l][r])


print(dp[0][n-1])

Python: # -*- coding: utf-8 -*-


if __name__ == '__main__':

    n = int(input())
    p = [0]
    for _ in range(n):
        r, c = list(map(int, input().split(" ")))
        p[-1] = r
        p.append(c)
    m = [[0 for i in range(n+1)] for j in range(n+1)]
    
    for i in range(1, n+1):
        m[i][i] = 0
    
    for l in range(2, n+1):
        for i in range(1, n-l+2):
            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])

    print(m[1][n])

C++: #include <bits/stdc++.h>
#define r(i,n) for(int i=0;i<n;i++)
using namespace std;
int dp[111][111],n,L[111],R[111];
int f(int l,int r){
	if(dp[l][r]>-1)return dp[l][r];
	int res=1e9;
	for(int i=l;i<r;i++){
		res=min(res,f(l,i)+f(i+1,r)+L[l]*R[i]*R[r]);
	}
	return dp[l][r]=res;
}
main(){
	memset(dp,-1,sizeof(dp));
	r(i,111)dp[i][i]=0;
	cin>>n;
	r(i,n)cin>>L[i]>>R[i];
	cout<<f(0,n-1)<<endl;
}