Go: package main

import "fmt"

func main() {
	var height int
	topHeights := [5]int{}

	for i := 0; i < 10; i++ {
		fmt.Scan(&height)

		for j := 0; j < 3; j++ {
			if topHeights[j] < height {
				topHeights[j+2] = topHeights[j+1]
				topHeights[j+1] = topHeights[j]
				topHeights[j] = height
				break
			}
		}
	}

	for i := 0; i < 3; i++ {
		fmt.Println(topHeights[i])
	}
}

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

int main(){

	int a[11],max1,max2,max3;

	for (int i=0; i<10; i++){
		while (true){ 
		cout << "山の高さ" << i+1 << "（整数）" ;			
		cin >> a[i];
		if ((cin.good() == 1) && (a[i] >= 0) && (a[i] <= 10000)) {
			break;
		}
		}	
	}

	max1 = a[0];

	for (i=1; i<10; i++){
		if (max1 < a[i]){
			swap (max1,a[i]);
		}
	}
	max2 = a[1];

	for (i=2; i<10; i++){
		if (max2 < a[i]){
			swap (max2,a[i]);
		}
	}
	max3 = a[2];

	for (i=3; i<10; i++){
		if (max3 < a[i]){
			swap (max3,a[i]);
		}
	}


		cout << max1 << endl;
		cout << max2 << endl;
		cout << max3 << endl;
		

return 0;
	}

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

int main(){
  std::vector<int> a;
  for(int i=0;i<10;i++){
    int tmp;
    std::cin >> tmp;
    a.push_back(tmp);
  }
  std::sort(a.begin(), a.end());
  for(auto i=a.rbegin();i!=a.rbegin()+3;i++){
    std::cout << *i << std::endl;
  }
  return 0;
}

C++: #include <iostream>
#include <algorithm>
using namespace std;
int a[15];

int main(){
    for(int i=0;i<10;i++) cin >> a[i];
    sort(a,a+10);
    cout << a[9] << endl << a[8] << endl << a[7] << endl;
    return 0;
}

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

int main()
{
    int heights[10];
    for(int i=0;i<10;i++)
    {
        cin>>heights[i];
    }
    sort(0,9);
    cout<<"height of 1st mountain "<<heights[9]<<endl;
    cout<<"height of 2nd mountain "<<heights[8]<<endl;
    cout<<"height of 3rd mountain "<<heights[7]<<endl;
    
    
}

C++: #include <bits/stdc++.h>

using namespace std;

typedef long long int ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const int INF = 1000000000;
const ll LINF = (ll) 4000000000000000000;
const ll MOD = (ll) 1000000007;
const double PI = acos(1.0);
const int limit = 100010;

#define REP(i,m,n) for(ll i = m; i < (ll)(n); i++)
#define rep(i,n) REP(i, 0, n)
#define MP make_pair
#define YES(n) cout << ((n) ? "YES" : "NO") << endl
#define Yes(n) cout << ((n) ? "Yes" : "No") << endl
#define Possible(n) cout << ((n) ? "Possible" : "Impossible") << endl
#define NP(v) next_permutation(v.begin(),v.end())
#define smaller_queue  priority_queue <ll, vector<ll>, greater<ll> >
//------------------------------------------------------

int main() {
    int h[10];
    rep(i, 10) cin >> h[i];
    sort(h, h + 10);
    reverse(h, h + 10);
    rep(i, 3) cout << h[i] << endl;

    return 0;
}

C++: #include <iostream>

using namespace std;
int data[11];
int temp;
int main()
{
    cout << "Input 10 Data(value = 1-10000): " << endl;
    for(int a = 0;a<10;a++)
    {
        cin >> data[a];
    }

    for(int x=0;x<10;x++)
    {
        for(int y=0;y<10;y++)
        {
            if(data[y]<data[y+1])
            {
                temp = data[y];
                data[y] = data[y+1];
                data[y+1] = temp;
            }
        }
    }
    cout << data[0] << endl;
    cout << data[1] << endl;
    cout << data[2] << endl;
}

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

int main(){
	vector<int> v(10);
	for(int i = 0 ; i < 10 ; i++) cin >> v[i];
	sort(v.begin(),v.end());
	for(int i = 0 ; i < 3 ; i++)
		cout << v[v.size()-1-i] << endl;
}

C++: #include<stdio.h>
#include<algorithm.h>

using namespace std;

int main(){

 int i, height[10];
 for(i=0;i<10;i++){
  scanf("%d", &height[i]);
 }
 sort(height, height+10, greater<int>());

 for(i=0;i<2;i++){
  printf("%d\n", height[i]);
 }

 return 0;
}

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

int main(){
    int height[10];
    int i;
    for( i = 0; i < 10; i++){
        cin >> height[i];
    }
    for( i = 0; i < 10; i++){
        sort(height, height + 10);
    }
    for( i = 0; i < 10; i++){
        cout << height[i] << endl;
    }
    return 0;
}

C++: #include <iostream>
#include<stdio.h>
#include<math.h>
#include<string.h>

using namespace std;

int main() {
	int T,i,j,a[11];

	for(i=1;i<11;i++)
    {
        scanf("%d",&a[i]);
    }
    for(i=1;i<11;i++)
    {
        for(j=1;j<11;j++)
        {
            if(a[i]>a[j])
            {
                T=a[i];
                a[i]=a[j];
                a[j]=T;
            }

        }
    }
    for(i=1;i<4;i++)
    {
        printf("%d\n",a[i]);
    }

	return 0;
}

C++: //
//  main.cpp
//  ListOfHeights
//
//  Created by James Hosken on 28/09/2014.
//  Copyright (c) 2014 James Hosken. All rights reserved.
//

#include <iostream>
#include <stdlib.h>
#include <algorithm>
using namespace std;

int main(int argc, const char * argv[])
{
    
    string input_line;
    
    int *heights;
    heights = new int[0];
    int lineNum = 0;
    
    
    while(cin){
        getline(cin, input_line);
        lineNum++;
        
        //Chunk of array expansion code
        int line = atoi(input_line.c_str());
        int* temp = new int[lineNum];
        copy(heights, heights + lineNum-1, temp);
        delete [] heights;
        temp[lineNum-1] = line;
        heights = temp;
        
        
    }
    sort(heights, heights + lineNum);
    
    for(int i = lineNum; i < lineNum-3; i--){
        cout << heights[i] << i << endl;
    }

    
    
    
    return 0;
}

C++: #include<iostream>
#include<string>
#include<algorithm>
using namespace std;
     
int main(){
  int a[9];
  for(int i=0;i<=9;i++){
    cin>>a[i];
  }
  sort(a,a+9);
  cout<<a[9]<<endl<<a[8]<<endl<<a[7]<<endl;
  return 0;
}

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

using namespace std;

int mountain[10];

int main()
{
	for(int i= 0;i<10;i++)
	{
		scanf("%d",&mountain[i]);
	}
	sort(mountain,mountain+10);
	for(int i= 0;i<3;i++)
	{
		printf("%d\n",mountain[9-i]);
	}
	return 0;
}

C++: #include<cstdio>
#include<cstring>

int main(){
    int n[10],a;
    for (int f=0;f<10;f++){
        scanf("%d",&n[f]);
    }
    for(int f1=0;f1<10;f1++){
        for(int f2=0;f2<10;f2++){
            a=max(a,max(n[f1],n[f2]));
           }
      }
    printf("%d",a);
    return 0;
}

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

int main(){
  int a[3]={};
  for(int i=0;i<10;i++){
    int temp;
    cin>>temp;
    for(int j=0;j<3;j++){
      if(a[j]<temp&&j!=2){
	a[j+1]=a[j];
	a[j]=temp;
	break;
      }
    }
  }
  for(int i=0;i<3;i++){
    cout<<a[i]<<endl;
    }
  return 0;
}

C++: #include<bits/stdc++.h>
using namespace std;
int main() {
  int h[10];
  for (int i = 0; i < 10; i++) {
    cin >> h[i];
  }
  sort(h, h+10);
  for (int i = 9; i >= 7; i--) {
    cout << h[i] << endl;
  }
  return 0;
}

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

int main() {
  vector<int> hills;
  for (int i = 0; i < 10; i++) {
    int x;
    cin >> x;
    hills.push_back(x);
  }
  std::sort(hills.begin(), hills.end(), std::greater<int>());
  for (int i = 0; i < 3; i++) {
    cout << hills[i] << endl;
  }
  return 0;
}

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

int main() {
  int mt[10];

  for(int i=0;i<10;i++) cin >> mt[i];

  sort(mt,mt+10);

  for(int i=9;i>=7;i--) cout << mt[i] <<endl;

  return 0;

}