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 <bits/stdc++.h>
using namespace std;
#define rep(i,n) REP(i,0,n)
#define REP(i,s,e) for(int i=(s); i<(int)(e); i++)
#define repr(i, n) REPR(i, n, 0)
#define REPR(i, s, e) for(int i=(int)(s-1); i>=(int)(e); i--)
#define pb push_back
#define all(r) r.begin(),r.end()
#define rall(r) r.rbegin(),r.rend()
#define fi first
#define se second

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

const ll INF = 1e18;
const ll MOD = 1e9 + 7;
const double EPS = 1e-8;

template<typename T> T chmax(T& a, const T& b){return a = (a > b ? a : b);}
template<typename T> T chmin(T& a, const T& b){return a = (a < b ? a : b);}

vl R, C;

vector<vl> dp;

ll calc(int l, int r) {
    if(dp[l][r] != INF) return dp[l][r];
    auto& ret = dp[l][r];
    if(r - l == 1) return ret = 0;
    if(r - l == 2) return ret = R[l] * C[l] * C[l+1];
    for(int m = l + 1; m < r; ++m) {
        chmin(ret, R[l] * C[m-1] * C[r-1] + calc(l, m) + calc(m, r));
    }
    return ret;
}

int main(){
    int n;
    cin >> n;
    R.resize(n);
    C.resize(n);
    rep(i, n) cin >> R[i] >> C[i];
    dp = vector<vl>(n+1, vl(n+1, INF));
    cout << calc(0, n) << endl;
    return 0;
}

C++: // http://algorithms.blog55.fc2.com/blog-entry-66.html

#include <stdio.h>
#include <string.h>

#define M 100

int N,R[M+1],C[M][M],B[M][M];

void compute(){
	int i=0,j,k,cost;
	memset(C,99,sizeof(C));
	for(;i<N;i++)C[i][i]=0;
	for(j=1;j<N;j++)
		for(i=0;i<N - j; i++ )
			for (k = i; k < i + j; k++ ){
				cost = C[i][k] + C[k+1][i+j] + R[i]*R[k+1]*R[i+j+1];
				if(cost<C[i][i+j])C[i][i+j]=cost,B[i][i+j]=k; 
			}
}

void order( int i, int j ){
	if(i==j)printf("M%d",i);
	else{
		printf("(");
		order( i, B[i][j]-1 ); order(B[i][j], j);
		printf(")");
	}
}

void input(){
	scanf("%d",&N);
	int z,i=0;
	for(;i<N;i++)scanf("%d%d",R+i,z);
	R[i]=z;
}

void output(){
	printf("%d\n",C[0][N-1]);
	//order(0, N);
	//puts("");
}

main(){
	input();
	compute();
	output();
}

C++: #include<iostream>
#include<iomanip>
#include<cmath>
#include<string>
#include<vector>
#include<algorithm>
#include<map>
#include<set>
#include<queue>
#include<stack>
using namespace std;
typedef long long ll;
#define fi first
#define se second
#define mp make_pair
const int inf=1e9+7;
const ll mod=1e9+7;

ll DP[105][105];
ll larr[105], rarr[105];

ll solve(int l, int r){
    if(DP[l][r] != 0) return DP[l][r];
    for(int i=l;i<r;++i){
        if(DP[l][r] == 0) DP[l][r] = solve(l, i) + solve(l+1, r) + larr[l] * rarr[i] * rarr[r];
        else DP[l][r] = min(solve(l, i) + solve(i+1, r) + larr[l] * rarr[i] * rarr[r], DP[l][r]);
    }
    return DP[l][r];
}

int main() {
    int n;
    cin>>n;
    for(int i=0;i<n;++i){
        cin>>larr[i]>>rarr[i];
    }
    cout<<solve(0, n-1)<<endl;
}

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

#define INF 1e9

int main(void){
  int n;
  cin >> n;

  int unwanted;
  vector<int> c(n + 1);
  cin >> c[0] >> c[1];
  for(int i = 2; i <= n; i++){ cin >> unwanted >> c[i]; }

  vector<vector<int> > dp(n, vector<int>(n + 1, INF));
  for(int i = 0; i < n; i++){ dp[i][i + 1] = 0; }

  for(int k = 2; k <= n; k++){
    for(int i = 0; i < n; i++){
      for(int j = 1; j < k; j++){
        if(i + k <= n){
          dp[i][i + k] = min(dp[i][i + k], dp[i][i + j] + dp[i + j][i + k] + c[i] * c[i + j] * c[i + k]);
        }
      }
    }
  }


  // ??????
  cout << dp[0][n] << endl;


  return 0;
}

C++: #include<algorithm>
template<class T>
int mcm(T first, T last) {
    const auto N = std::distance(first, last) - 1;
    int dp[N][N];
    std::fill(dp[0], dp[N], 1 << 28);
    for (int i = 0; i < N; ++i) dp[i][i] = 0;
    for (int L = 1; L < N; ++L)
        for (int i = 0; i < N - L; ++i) {
            int j = i + L;
            for (int k = i; k < j; ++k)
                dp[i][j] = std::min(dp[i][j], dp[i][k] + dp[k + 1][j] + first[i] * first[k + 1] * first[j + 1]);
        }
    return dp[0][N - 1];
}
#include<iostream>
#include<vector>
using namespace std;
int main() {    
    cin.tie(0);
    ios::sync_with_stdio(false);
    int n;
    cin>>n;
    vector<int> vec(n+1);
    for(int i=0;i<n;++i) cin>>vec[i]>>vec[i+1];
    cout<<mcm(vec.begin(),vec.end())<<endl;
}

C++: #include <iostream>
#include <cstring>
#include <algorithm>
#include <queue>
#include <cstdio>
#include <cstdlib>
using namespace std;

static const  int N = 100;

int main() {

    int n, p[N+1], m[N+1][N+1];
    cin >> n;
    
    for (int i = 1; i <= n; i++) {
        cin >> p[i-1] >> p[i];
    }
    
    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] = (1 << 21);
            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]);
            }
        }
    }
    
    cout << m[1][n] << endl;
    return 0;
}