Go: package main

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

func getScanner(fp *os.File) *bufio.Scanner {
	scanner := bufio.NewScanner(fp)
	scanner.Split(bufio.ScanWords)
	scanner.Buffer(make([]byte, 500001), 500000)
	return scanner
}

func getNextString(scanner *bufio.Scanner) string {
	scanner.Scan()
	return scanner.Text()
}

func getNextInt(scanner *bufio.Scanner) int {
	i, _ := strconv.Atoi(getNextString(scanner))
	return i
}

func main() {
	fp := os.Stdin
	if len(os.Args) > 1 {
		fp, _ = os.Open(os.Args[1])
	}

	scanner := getScanner(fp)
	writer := bufio.NewWriter(os.Stdout)

	n := getNextInt(scanner)
	mm := make([]int, n+1)
	dp := make([][]int, n+1)
	for i := 0; i <= n; i++ {
		dp[i] = make([]int, n+1)
	}
	for i := 0; i < n; i++ {
		mm[i] = getNextInt(scanner)
		mm[i+1] = getNextInt(scanner)
	}

	for l := 2; l <= n; l++ {
		for i := 1; i <= n-l+1; i++ {
			j := i + l - 1
			for k := i; k <= j-1; k++ {
				d := dp[i][k] + dp[k+1][j] + mm[i-1]*mm[k]*mm[j]
				if dp[i][j] == 0 || dp[i][j] > d {
					dp[i][j] = d
				}
			}
		}
	}

	fmt.Fprintln(writer, dp[1][n])

	writer.Flush()
}

C++: #include<iostream>
#include<algorithm>
#include<cstdio>

using namespace std;
const int INF = 0x3f3f3f3f;
const int N = 1010;

int p[N];

int f[N][N];

int main()
{
	int n;
	scanf("%d", &n);
	for(int i = 1; i <= n; i++)	scanf("%d%d", &p[i - 1], &p[i]);
	
	for(int len = 2; len <= n; len++)
	{
		for(int i = 1; i + len - 1 <= n; i++)
		{
			int j = i + len - 1;
			
			f[i][j] = INF;
			
			for(int k = i; k < j; k++)
			{
				f[i][j] = min(f[i][j], f[i][k] + f[k + 1][j] + p[i - 1] * p[k] * p[j]);
			}
		}
	}
	
	
	printf("%d\n", f[1][n]);
	
	return 0;
}

C++: #include <iostream>
using namespace std;
int m[1000][1000];
int maxchainorder(int p[],int a){
    int n=a;
    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]=100000000;
            for(int k=i;k<=j-1;k++){
                int q=m[i][k]+m[k+1][j]+p[i-1]*p[k]*p[j];
                if(q<m[i][j]){
                    m[i][j]=q;
                }
            }
        }
    }
    return m[1][n];
}
int main(){
    int n,p[100000];
    cin>>n;
    for(int i=0;i<n;i++){
        cin>>p[i]>>p[i+1];
    }
    cout<<maxchainorder(p,n)<<endl;
    return 0;
}

C++: //compiledef
#include <bits/stdc++.h>
#define rep(i, n) for(i=0;i<(n);i++)
#define per(i, n) for(i=(n);i>0;i--)
#define repx(i, n, x) for(i=(x);i<(n);i++)
#define xper(i, n, x) for(i=(n);i>(x);i--)
#define pback push_back

//c++def
using namespace std;
typedef long long int ll;
const ll MOD = 1e9+7;
const ll MOD2 = 998244353;
const ll INF =2e9;
ll matrixchainorder(int *a, int n){
	int i;
	static ll dp[150][150];
	repx(i, n, 1) dp[i][i] = 0;
	for(int l = 2;l<=n;l++){
		for(i = 1;i<=n-l+1;i++){
			int j = i+l-1;
			dp[i][j] = INF;
			for(int k = i; k<j;k++){
				ll x = dp[i][k] + dp[k+1][j] + (a[i-1]*a[k]*a[j]);
				dp[i][j] = min(dp[i][j], x);
			}
		}
	}
	return dp[1][n];	
}

int main(){
	int n;
	int i;
	cin >> n;
	int a[n+3];
	for(i=1;i<=n;i++){
		cin >> a[i-1] >> a[i];
	}
	cout <<	matrixchainorder(a, n) <<endl;
}

C++: if __name__ == '__main__':
    N = input()


    m = [[0] * (N+1) for i in range(N+1)]

    p = [0] * N

    for i in range (N):
        p[i],dummy  = map(int, raw_input().split())
        
    p.append(dummy)

    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<iostream>
#include<string>
#include<algorithm>
#include<stdio.h>
#include<stdlib.h>
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;
}

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

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

	    vector<pair<int,int> > B(n);
	    for(int i=0;i<n;i++)
	    {
                int a,b;
                cin>>a>>b;
                B[i].first=a;
	        B[i].second=b;
	    }
	    vector<vector<int> > dp(n,vector<int>(n,0));
	    for(int i=0;i<n-1;i++)
	        dp[i][i+1]=B[i].first*B[i].second*B[i+1].second;
	    for(int l=2;l<=n-1;l++)
	    {
	        for(int i=0;i<n-l;i++)
	        {
	            int j=i+l;
	            dp[i][j]=INT_MAX;
	            int q=dp[i][j];
	            for(int k=1;i+k<=j;k++)
	            {

	              q=min(q,dp[i][i+k-1]+dp[i+k][j]+B[i].first*B[i+k].first*B[j].second);
	                if( q < dp[i][j])
	                dp[i][j]=q;

	            }
	        }
	    }
	  /* for(int i=0;i<n;i++)
	   {
	       for(int j=0;j<n;j++)
	       cout<<dp[i][j]<<"           ";
	       cout<<endl;
	   }*/
	    cout<<dp[0][n-1]<<endl;

	return 0;
}

C++: #include <iostream>
#include<climits>
#include<vector>
using namespace std;
 
int MCM(int p[],int n) {
    vector<vector<int> > m(n+1,vector<int>(n+1));
    for (int i = 0; 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] = INT_MAX;
            for (int k = i; k <= j-1; k++) {
                int q = m[i][k] + m[k + 1][j] + p[i - 1] * p[k] * p[j];
                if (m[i][j] > q) {
                    m[i][j] = q;
                }
 
            }
        }
 
    }
    return m[1][n];
}
 
int main() {
    int n, p[200];
    cin >> n;
    for (int i = 0; i < n; i++) {
        cin >> p[i] >> p[i + 1];
    }
    cout << MCM(p, n) << endl;
    return 0;
}

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

const int N=100;

int main(){
	int n,p[N+1],m[N+1][N+1];//m代表所需乘法运算的最小次数 
	cin>>n;
	for(int i=1;i<=n;i++)
		cin>>p[i-1]>>p[i];//存储矩阵的行数
	
	for(int i=1;i<=n;i++)
		m[i][i]=0; //初始化所需乘法运算所需最小次数
	
	for(int l=2;l<=n;l++){
		for(int i=1;i<=n-l+1;i++){
			int j=i+l-1;
			m[i][j]=(l<<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;
}

C++: #include <iostream>
#include <algorithm>
#include <cstdio>
#include <cmath>
#include <string>
#include <cctype>
#include <stack>
#include <queue>
#include <vector>
#include <cstdlib>
#include <list>
#define _USE_MATH_DEFINES
#include <math.h>

using namespace std;

int main() {

	int n, p[101], m[101][101];

	cin >> n;
	for (int i = 1; i < n; i++) {
		cin >> p[i - 1] >> p[i];
		m[i][i] = 0;
	}

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

	return 0;
}

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

struct matrix {int r, c;};
typedef matrix M;
#define v vector
typedef v<int> vi;
typedef v<vi> vvi;
typedef v<M> vm;

vm m;
vvi t;

int McM(int b, int e) {
	int r = t[b][e];
	if (r != INT_MAX)
		return r;
	if (b == e)
		r = 0;
	else
		for (int i = b; i < e; i++)
			r = min(r, McM(b, i) + McM(i + 1, e) + m[b].r * m[i].c * m[e].c);
	t[b][e] = r;
	return r;
}

int main() {
	int n;
	cin >> n;
	m = vm(n);
	t = vvi(n, vi(n, INT_MAX));
	for (M &x: m)
		cin >> x.r >> x.c;
	cout << McM(0, n - 1) << endl;
}