Go: package main

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

var (
	n  = 10
	sc = bufio.NewScanner(os.Stdin)
)

func main() {
	heights := make([]int, n, n)
	for i := 0; i < n; i++ {
		sc.Scan()
		heights[i], _ = strconv.Atoi(sc.Text())
	}
	sort.Sort(sort.Reverse(sort.IntSlice(heights)))

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

C++: //include----------------------------------------------------------------------------------------------------------------------
#include <bits/stdc++.h>
 
//using namespace--------------------------------------------------------------------------------------------------------------
using namespace std;
 
//define-----------------------------------------------------------------------------------------------------------------------
#define rep(i, n) for(int i = 0; i < (int)n; i++)
#define FOR(i, s, n) for(int i = s; i < (int)n; i++)
#define per(i, n) for(int i = n; i >= 0; i--)
#define ROF(i, s, n) for(int i = s; i >= (int)n; i--)
#define FORIT(i, A) for (auto i : A)
#define PRINT(x) cout << (x) << "\n"
#define ALL(a) (a).begin(),(a).end()
#define RALL(a) (a).rbegin(), (a).rend()
#define PB push_back
#define MP make_pair
#define EACH(i, n) for (__typeof((n).begin()) i = (n).begin(); i != (n).end(); ++i)
#define SZ(a) int((a).size())
#define EXIST(s,e) ((s).find(e)!=(s).end())
#define SORT(c) sort((c).begin(),(c).end())
#define INF 1 << 25
#define CLR(a) memset((a), 0 ,sizeof(a))
#define dump(x) cerr << #x << " = " << (x) << "\n";
#define debug(x) cerr << #x << " = " << (x) << " (L" << __LINE__ << ")" << " " << __FILE__ << "\n";
#define sq(n) (n) * (n)
 
//typedef----------------------------------------------------------------------------------------------------------------------
typedef vector<int> VI;
typedef vector<VI> VVI;
typedef vector<string> VS;
typedef pair<int, int> PII;
typedef long long LL;
typedef unsigned int uint;
typedef unsigned long long ull;
 
//const------------------------------------------------------------------------------------------------------------------------
const double EPS = 1e-10;
const double PI = acos( -1.0 );
 
//global-----------------------------------------------------------------------------------------------------------------------
vector<int> a(10);
 
//function---------------------------------------------------------------------------------------------------------------------
int main() {
    rep( i, 10 ) {
        scanf( "%d", &a[ i ] );
    }
    sort( a.begin(), a.end() );
    ROF( i, 9, 7 ) {
        printf( "%d\n", a[ i - 1 ] );
    }
    return 0;
}

C++: #include <iostream>
using namespace std;
int main(){

	int a[10];

	 for(int i=0; i<10; i++){

	 	cin >> a[i];
	 }

	 for(int t=0; t<9; t++){

	 	for(int s=t+1; s<10; s++ ){

	 		if(a[s]>a[t]){

	 			int num=a[s];

	 			a[s]=a[t];

	 			a[t] = num;
	 		}
	 	}
	 }

	 for (int j=0; j<3; j++){

	 	cout << a[j] << endl;
	 }
}

C++: #include <iostream>
using namespace std;
  
int main()
{
    int array[10];
      
    for(int i=0; i<10; i++)
        cin>>array[i];
    
    for(i=0; i<9; i++){
        for(int j=i+1; j<10; j++){
            if(array[i]<array[j]){
                int tmp=array[i];
                array[i]=array[j];
                array[j]=tmp;
            }
        }
    }
    
    for(i=0; i<3; i++)
        cout<<array[i]<<"\n";
    
    return 0;
}

C++: #include <stdio.h>

int main(){
  int a[10], max, maxidx;
  for(int i=0; i<=9; i++){
    scanf("%d", &a[i]);
  }
  for(int j=0; j<3; j++){
    max = -1;
    for(int i=0; i<=9; i++){
      if(a[i] > max){
	max = a[i];
	maxidx = i;
      }
    }
    printf("%d", max);
    a[maxidx] = -1;
  }
}

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

using namespace std;

int main()
{
	vector<int> mountains;

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

	return (0);
}

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

int main(){
  int a[10],i,j;

  for(i=0;i<10;i++){
    cin >> a[i];
  }

  sort(a,a+10);

  for(i=9;i>=7;i--){
    cout << a[i] << endl;
  }
}

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

int main_test()
{
	string str;
	cout << "あなたの名前を入力してください" << endl;
	cin >> str;
	cout << str <<"さんよろ"<<endl;

	return 0;
}

C++: #include <iostream>

using namespace std;

int main() {
	const int len = 10;
	int arr[len];

	for (int i = 0; i < len; i++)
		cin >> arr[i];

	for (int i = 0; i < len; i++)
		for (int j = 0; j < len; j++)
			if (arr[i] < arr[j])
				swap(arr[i], arr[j]);

	cout << endl;

	for (int i = len - 1; len - 4 < i; i--)
		cout << arr[i] << endl;

	return 0;
}

C++: #include<stdio.h>
int main(void) {
	int i, mountain[10],x,y;
	int n = 0;
	int l = 0;
	int m = 0;
	for (i = 0;i < 10;i++) {
		scanf("%d", &mountain[i]);
	}
	for (i = 0;i < 10;i++) {
		if (mountain[i] > m) {
			m = mountain[i];
			x = i;
		}
	}
	printf("%d\n", m);
	for (i = 0;i < 10;i++) {
		if (i == x) {}
		else {
			if (mountain[i] > n) {
				n = mountain[i];
				y = i;
			}
			
		}
	}
	printf("%d\n", n);
	for (i = 0;i < 10; i++) {
		if (i == y || i == x) {}
		else {
			if (mountain[i] > l) {
				l = mountain[i];
			}
		}
	}
	printf("%d\n", l);

	return 0;
}

C++: #include <iostream>
#include <string>

using namespace std;

main(){
	int i, j;
	int data[10] = {0};
	int buf;

	for(i = 0; i < 10; i++){
		cin >> data[i];
	}

	for(j = 0; j < 10; j++){
		for(i = 10; i > 0; i--){
			if(data[i] > data[i - 1]){
				buf = data[i - 1];
				data[i - 1] = data[i];
				data[i] = buf;
			}
		}
	}

	for(i = 0; i < 3; i++){
		cout << data[i] << endl;
	}
}

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

int main(void)
{
    vector <int> a;
    int b;

    for (int i = 0; i < 10; i++){
    cin>>b;
a.push_back(b);
}

for (int i = 0; i < 100000; i++){
	for (int j = 0; j < 10000; j++){
		b = 0;
	}
}

sort(a.begin(), a.end());
cout << a[9] << endl << a[8] << endl << a[7] << endl;

return 0;
}

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

int main(){

 int f, s, t, i, x;

 f = s = t = 0;

 for (i = 0; i < 10; i++) {
  cin >> x;

  if (x > f) {
   t = s;
   s = f;
   f = x;
  } else if (x > s) {
   t = s;
   s = x;
  } else if (x > t) {
   t = x;
  }
 }

 cout << f << "\n" << s << "\n" << t << "\n";

 return 0;
}

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

int nList[10],nGet,nSave[4]; // Variables

int main() {
    for (int i=0;i<10;i++){// Until 10 integers are set
        scanf("%i",&nGet); // Reads input
        if (nGet>0&&nGet<10000){ // Making sure the number inputted is greater than 0 and less than 10,000
        nList[i]=nGet; //
    }}


for (int sN=0;sN<3;sN++){

for (int rN=0;rN<10;rN++){

if (nList[rN]>nSave[sN]&&nSave[sN]==0){
    nSave[sN]=nList[rN];
    nList[rN]=0;}
if (nList[rN]>nSave[sN]&&nSave[sN]!=0){
        nSave[sN+1]=nSave[sN];
        nSave[sN]=nList[rN];
        nList[rN]=0;}

        }
    }


printf("%i\n%i\n%i",nSave[0],nSave[1],nSave[2]); // Shows the stored numbers
}

C++: # include <iostream>
using namespace std;
int main(){
	

	long int a[10], i, j, b, max1, max2, max3;

	cout << "\n";

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

	for (j = 0; j < 9; j++)
	for (i = 0; i < 9 - j; i++)
	if (a[i] > a[i + 1])
	{
		b = a[i];
		a[i] = a[i + 1];
		a[i + 1] = b;
	}

	max1 = a[0];
	max2 = a[1];
	max3 = a[2];
	cout << max1 << "\t";
	cout << max2 << "\t";
	cout << max3 << endl;
		return 0;
		/*Javad SHeybani*/

	}

C++: #include <iostream>

using namespace std;

int main()
{
	int i,moun,high[10000];
	int j=0;
	for(i=0;i<10000;i++)
	{
		high[i] = 0;
	}
	for(i=0;i<10;i++)
	{
		cin >> moun;
		high[moun] = 1;
	}
	for(i=9999;i>0;i--)
	{
		if(high[i] == 1)
		{
			cout << i << endl;
			j++;
		}
		if(j == 3)
		{
			break;
		}
	}
	return 0;
}