Go: package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
)

// I/O
type Scanner struct {
	sc *bufio.Scanner
}

func NewScanner() *Scanner {
	sc := bufio.NewScanner(os.Stdin)
	sc.Split(bufio.ScanWords)
	sc.Buffer(make([]byte, 1024), int(1e+9))
	return &Scanner{sc}
}

func (s *Scanner) nextStr() string {
	s.sc.Scan()
	return s.sc.Text()
}

func (s *Scanner) nextInt() int {
	i, e := strconv.Atoi(s.nextStr())
	if e != nil {
		panic(e)
	}
	return i
}

func (s *Scanner) nextFloat() float64 {
	f, e := strconv.ParseFloat(s.nextStr(), 64)
	if e != nil {
		panic(e)
	}
	return f
}

func (s *Scanner) nextRuneSlice() []rune {
	return []rune(s.nextStr())
}

func (s *Scanner) nextIntSlice(n int) []int {
	res := make([]int, n)
	for i := 0; i < n; i++ {
		res[i] = s.nextInt()
	}
	return res
}

func (s *Scanner) nextFloatSlice(n int) []float64 {
	res := make([]float64, n)
	for i := 0; i < n; i++ {
		res[i] = s.nextFloat()
	}
	return res
}

// Arithmetic
func max(nums ...int) int {
	m := nums[0]
	for _, i := range nums {
		if m < i {
			m = i
		}
	}
	return m
}

func min(nums ...int) int {
	m := nums[0]
	for _, i := range nums {
		if m > i {
			m = i
		}
	}
	return m
}

func abs(x int) int {
	if x > 0 {
		return x
	}
	return -x
}

func pow(x, y int) int {
	res := 1
	for i := 0; i < y; i++ {
		res *= x
	}
	return res
}

func ceil(a, b int) int {
	if a%b == 0 {
		return a / b
	} else {
		return a/b + 1
	}
}

// Sort
type RuneSlice []rune

func (a RuneSlice) Len() int           { return len(a) }
func (a RuneSlice) Less(i, j int) bool { return a[i] < a[j] }
func (a RuneSlice) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }

// Main
func main() {
	sc := NewScanner()
	wtr := bufio.NewWriter(os.Stdout)
	N := sc.nextInt()
	p := make([]int, N+1)
	dp := make([][]int, N+1)
	for i, _ := range dp {
		dp[i] = make([]int, N+1)
	}
	for i := 0; i < N; i++ {
		p[i] = sc.nextInt()
		p[i+1] = sc.nextInt()
	}
	for i := 1; i <= N; i++ {
		dp[i][i] = 0
	}
	for l := 2; l <= N; l++ {
		for i := 1; i <= N-l+1; i++ {
			j := i + l - 1
			dp[i][j] = 1 << 60
			for k := i; k <= j-1; k++ {
				dp[i][j] = min(dp[i][j], dp[i][k]+dp[k+1][j]+p[i-1]*p[k]*p[j])
			}
		}
	}

	fmt.Fprintln(wtr, dp[1][N])
	wtr.Flush()
}

C++: #include<iostream>
#include<map>
#include<deque>
#include<algorithm>
#include<string>
#include<cctype>
using namespace std;
typedef long long ll;
#define REP(i,b,e) for(ll i=(ll)b;i<(ll)e;i++)
#define Rep(i,n) REP(i,0,n)
ll longinf=1ll<<60;

ll n,p[101],m[101][101];
int main(){
    cin>>n;
    Rep(i,n){
        cin>>p[i]>>p[i+1];
    }
    REP(i,1,n+1) m[i][i]=0;
    REP(l,2,n+1){
        REP(i,1,n-l+2){
            int j=i+l-1;
            m[i][j]=longinf;
            REP(k,i,j+1){
                m[i][j]=min(m[i][j],m[i][k]+m[k+1][j]+p[i-1]*p[k]*p[j]);
            }
        }
    }
    cout<<m[1][n]<<endl;
    return 0;
}

C++: #include <algorithm>
#include <cmath>
#include <ctime>
#include <functional>
#include <iostream>
#include <map>
#include <numeric>
#include <set>
#include <sstream>
#include <string>
#include <utility>
#include <vector>
#include <cstring>
#include <tuple>
#include <bitset>
#include <unordered_map>
#include <climits>
using namespace std;
typedef long long ll;

int dp[101][101];

void init() {
    for (int i=0; i<101; ++i) {
        for (int j=0; j<101; ++j) {
            if (i == j) {
                dp[i][j] = 0;
                continue;
            }
            dp[i][j] = INT_MAX;
        }
    }
}

int main() {
    ios::sync_with_stdio(false);

    int n;
    cin >> n;
    vector<pair<int,int>> mat(n);
    for (int i=0; i<n; ++i) {
        cin >> mat[i].first >> mat[i].second;
    }

    init();

    for (int l=2; l<=n; ++l) {
        for (int i=0; i<n; ++i) {
            int j = i+l-1;
            if (j > n) continue;
            for (int k=i+1; k<=j; ++k) {
                dp[i][j] = min(dp[i][j], dp[i][k-1] + dp[k][j]
                               + mat[i].first * mat[j].second * mat[k].first);
            }
        }
    }
    cout << dp[0][n-1] << endl;

    return 0;
}

C++: #include<bits/stdc++.h>
using namespace std;
#define int long long
int dp[111][111];
signed main(){
  int n;
  cin>>n;
  int r[n],c[n];
  for(int i=0;i<n;i++) cin>>r[i]>>c[i];
  int INF=1LL<<55LL;
  for(int i=0;i<111;i++) fill_n(dp[i],111,INF);
  for(int i=0;i<n;i++) dp[i][i+1]=0;
  for(int i=2;i<=n;i++)
    for(int j=0;j<=n-i;j++)
      for(int k=1;k<i;k++)
	dp[j][j+i]=min(dp[j][j+i],dp[j][j+k]+dp[j+k][j+i]+(r[j]*r[j+k]*c[j+i-1]));
  cout<<dp[0][n]<<endl;
  return 0;
}

C++: #include <iostream>
#include <algorithm>
using namespace std;

const long N = 100;

int main(){
	long n, p[N + 1], m[N + 1][N + 1];
	cin >> n;
	for (long i = 1; i <= n; i++) cin >> p[i - 1] >> p[i];
	for (long i = 1; i <= n; i++) m[i][i] = 0;
	for (long l = 2; l <= n; l++){
		for (long i = 1; i <= n - l + 1; i++){
			long j = i + l - 1;
			m[i][j] = (1 << 21);
			for (long k = i; k <= j - 1; k++){
				m[i][j] = min(m[i][j], m[i][k] + m[k + 1][j] + p[i - 1] * p[k] * p[j]);
			}
		}
	}
	cout << m[1][n] << endl;
	return 0;
}

C++: #include<iostream>
#include<cstdio>
#include<algorithm>
#define inf 1 << 21
#define MAX 100
using namespace std;

int m[MAX + 1][MAX + 1], p[MAX + 1],n;

void MCM(){
    
    for(int i = 1; i <= n; i++) m[i][i] = 0;
    
    for(int l = 2; l <= n; l++){
        for(int i = 1; i <= n - l + 1; i++){
            int j = i + l - 1;
            m[i][j] = inf;
            for(int k = i; k <= j-1; k++){
                m[i][j] = min(m[i][j],m[i][k] + m[k+1][j] + p[i-1]*p[k]*p[j]);
            }
        }
    }
    printf("%d\n",m[1][n]);
}

int main(){
    scanf("%d",&n);
    for(int i = 1; i <= n; i++) scanf("%d %d",&p[i-1],&p[i]);
    MCM();
    return 0;
}

C++: #include <bits/stdc++.h>
using namespace std;

#define REP(i,m,n) for(int i=(m); i<(int)(n); i++)
#define RREP(i,m,n) for(int i=(int)(n-1); i>=m; i--)
#define rep(i,n) REP(i,0,n)
#define rrep(i,n) RREP(i,0,n)
#define all(a) (a).begin(),(a).end()
#define rall(a) (a).rbegin(),(a).rend()
#define fi first
#define se second
#define debug(...) {cerr<<"[L"<<__LINE__<<"] "; _debug(__VA_ARGS__);}

template<typename T>
string join(const vector<T>&v, string del=", "){ stringstream s;
    for(auto x : v) s << del << x; return s.str().substr(del.size());
}
template<typename T>
ostream& operator<<(ostream& o, const vector<T>&v){
    if(v.size()) o << "[" << join(v) << "]"; return o;
}
template<typename T>
ostream& operator<<(ostream& o, const vector<vector<T> >&vv){
    int l = vv.size();
    if(l){ o<<endl; rep(i,l) o << (i==0 ? "[ " : ",\n  " ) << vv[i] << (i==l-1 ? " ]" : ""); }
    return o;
}
inline void _debug(){cerr<<endl;}
template<class First, class... Rest>
void _debug(const First& first, const Rest&... rest){cerr<<first<<" ";_debug(rest...);}

typedef long long ll;
typedef pair<int, int> pii;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<ll> vl;
typedef vector<vl> vvl;

const double PI = (1*acos(0.0));
const double EPS = 1e-9;
const int INF = 0x3f3f3f3f;
const ll INFL = 0x3f3f3f3f3f3f3f3fLL;
const ll mod = 1e9 + 7;

inline void finput(string filename) {
    freopen(filename.c_str(), "r", stdin);
}

vector<pii> mat;
vvi dp;
int rec(int l, int r){
    if(dp[l][r] != INF) return dp[l][r];
    if(l == r) return dp[l][r] = 0;
    int res = INF;
    REP(i,l,r){
        int x = mat[l].fi * mat[i].se * mat[r].se;
        res = min(res, x + rec(l,i) + rec(i+1,r));
    }
    return dp[l][r] = res;
}

int main(){
    ios_base::sync_with_stdio(0);
    // finput("./input");
    int n; cin >> n;
    mat = vector<pii>(n);
    rep(i,n){
        int r, c; cin >> r >> c;
        mat[i] = pii(r, c);
    }
    dp = vvi(n, vi(n, INF));
    if(n == 1) cout << 0 << endl;
    else cout << rec(0, n-1) << endl;
    return 0;
}