Go: package main

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

var rdr = bufio.NewReaderSize(os.Stdin, 1000000)

func readLine() string {
	buf := make([]byte, 0, 1000000)
	for {
		l, p, e := rdr.ReadLine()
		if e != nil {
			panic(e)
		}
		buf = append(buf, l...)
		if !p {
			break
		}
	}
	return string(buf)
}

func toInt(str string) int {
	n, _ := strconv.Atoi(str)
	return n
}

func main() {
	lst := make([]int, 0)
	for i := 0; i < 10; i++ {
		lst = append(lst, toInt(readLine()))
	}
	sort.Ints(lst)
	for i := 9; i > 6; i-- {
		fmt.Println(lst[i])
	}
}

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

int main()
{   
       int D[10]; 
       int i,k;
      
       
       for(i=1; i<=10; i++)
             {
             cin>>D[i];
             }
             sort(D,D+10);
             reverse(D,D+10);
             
       for(k=1; k<=3; k++)
       {
                cout <<D[k]<<endl;
                }
      
       
    
     return 0;
}

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

int main() {
	int mountains_high[10];
	for (int i = 0; i < 10; i++) {
		cin >> mountains_high[i];
	}
	for (int i = 0; i < 9; i++) {
		for (int j = 0; j < 9; j++) {
			if (mountains_high[j] < mountains_high[j + 1])swap(mountains_high[j], mountains_high[j + 1]);
		}
	}
	for (int i = 0; i < 3; i++) {
		cout << mountains_high[i] << endl;
	}
	return 0;
}

C++: #include<iostream>
#include<algorithm>
using namespace std;
int main(){
  int sum[10];
  int  i;
  for(i = 1; i <= 10 ;i++){
  cin >> sum[i];
  }
  sort(sum,sum+10);
  for(i = 9 ; i > 6;i--){
    cout << sum[i] << endl;
  }
    return 0;
  }

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

int main()
{
    std::set< int, std::greater<int> > s;
    for (int i = 0; i < 10; ++i) {
        int h;
        std::cin >> h;
        s.insert(h);
    }
    std::set< int, std::greater<int> >::iterator it = s.begin();
    for (int i = 0; i < 3; ++i)
        std::cout << *it++ << std::endl;
}

C++: #include<stdio.h>
int main()
{
long long a[11],i,temp,j,k,n=10;
for(i=0;i<10;i++)
{
scanf("%lld",&a[i]);
}
for(j=0;j<n-1;j++)
	{
	for(k=0;k<n-1;k++)
	{
	if(a[k+1]<a[k])
	{
	temp=a[k+1];
	a[k+1]=a[k];
	a[k]=temp;
	}
	}
}
for(i=9;i>6;i--)
{
printf("%lld\n",a[i]);
}
return 0;
}

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

int main()
{
 int h[10];
 for(int i=0; i<10; i++) cin >> h[i];

 for(int i=0; i<3; i++){
  int n = h[0];
  int m = 0;
  for(int j=1; j<10; j++)
   if(n < h[j]){
    n = h[j];
    m = j;
   }
  cout << n << '\n';
  h[m] = -1;
 }

 return 0;
}

C++: #include <stdio.h>

int main(void){
  int height[10];
  int i, j;
  int tmp;

  for(i=0;i<10;i++){
    scanf("%d", &height[i]);
  }
  
  for(i=0;i<9;i++){
    for(j=i+1;j<9;j++){
      if(height[i] <= height[j]){
	tmp = height[i];
	height[i] = height[j];
	height[j] = tmp;
      }
    }
  }

  for(i=0;i<3;i++){
    printf("%d\n", height[i]);
  }

  return 0;
}

C++: 
#include<iostream>
using namespace std;
#define NUM 10	// ?±±?????°
#define TOP 3	// ??????TOP?????????????????????

int main(){
	int hight[NUM];	// ??\????????????
	int top[TOP];

	// ?????????????????????
	for(int i=0; i < NUM ; ){
		cin >> hight[i];
		// ?????¶ : 0 <= ?±±????????? <= 10000
		if(hight[i] < 0  ||  hight[i] > 10000){
			continue;
        }
        i++;
	}
    
	// ?????????????????????TOP???????????????
	top[0] = 0;
	for(int i=0; i < NUM ; i++){
		for(int j=0;j<TOP ; j++){
			// ???????????????????????????????????°???hight[i]???top[j]?????????????????\?????????
			if(hight[i] > top[j]){
				for(int k=TOP-1 ; k > j ; k--){
					top[k] = top[k-1];  // <- ????????§?????°?????????
				}
				top[j] = hight[i];
                break;
			}
		}
	}

	// ?????????TOP???????????????
	for(int i=0; i < TOP ; i++ ){
		cout << top[i] << '\n';
	}

	return 0;
}

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

int main()
{
    int x[10];
    for (unsigned int i = 0; i < (sizeof(x) / sizeof(int)); i++)
        cin >> x[i];
    int first = 0;
    for (unsigned int i = 0; i < (sizeof(x) / sizeof(int)); i++)
        if (x[i] > first)
            first = x[i];
    int second = 0;
    for (unsigned int i = 0; i < (sizeof(x) / sizeof(int)); i++)
        if (x[i] > second && first > x[i])
            second = x[i];
    int third = 0;
    for (unsigned int i = 0; i < (sizeof(x) / sizeof(int)); i++)
        if (x[i] > third && second > x[i])
            third = x[i];
    cout << first << endl;
    cout << second << endl;
    cout << third << endl;
}

C++: #include<iostream>
#include<algorithm>
using namespace std;
int main(){
int h[10];
int i;
for(i=0;i<10;i++)cin>>h[i];
sort(h,h+10);
for(i=0;i<3;i++)cout<<h[i]<<endl;
return 0;
}

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

using namespace std;

int high[10];

int main(){
	for (int i = 0; i < 10; i++){
		cin >> high[i];
		high[i] = -high[i];
	}

	sort(high, high + 10);

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

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

int main(){
	int i=0;
	int m[10];
	for(i=1;i<=10;i++)
	{
		cin>>m[i];
	}
	
	int temp=0;
	i=0;
	
	for(i=1;i<=10;i++)
	{
		if(temp<m[i])
		{
			temp=m[i];
		}
	}
	int f=temp;
	i=0;
	temp=0;
	for(i=1;i<=10;i++)
	{
		if(temp<m[i]&&m[i]<f)
		{
			temp=m[i];
		}
	}
	int s=temp;
	i=0;
	temp=0;
	for(i=1;i<=10;i++)
	{
		if(temp<m[i]&&m[i]<s)
		{
			temp=m[i];
		}
	}
	int t=temp;
	
	cout<<f<<endl<<s<<endl<<t<<endl;

    return 0;
}

C++: /*
List of Top 3 Hills
?±±???????????????????????????????????´??°??§??¨?????? 10 ?????????????????????????????????
?????? 10 ?????????????????????????????????
???????????§????????????????????????????????????????????°?????????????????????????????????
*/

#include <iostream>
#include <array>

using namespace std;

int main()
{
	// ?????°??£?¨?
	int array1[10];

	// ??\?????????
	for ( int i = 0; i < 10; i++ ) {
		cin >> array1[ i ];
	}

	// ???????????????
	for ( int i = 1; i < 10; i++ ) {
		for ( int j = 0; j < i; j++ ) {
			if ( array1[ j ] > array1[ i ] ) {
				int tmp = array1[ i ];
				array1[ i ] = array1[ j ];
				array1[ j ] = tmp;
			}
		}
	}

	// ????????????
	cout << array1[ 9 ] << endl << array1[ 8 ] << endl << array1[ 7 ] << endl;

	return 0;
}

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

int main(){
  int a[10];
  for(int i=0;i<10;i++){
    cin>>a[i];
  }
  sort(a,a+10,greater<int>());
  for(int i=0;i<3;i++){
    cout<<a[i]<<endl;
  }
  return 0;
}

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

int main()
{
int n1=0,n2=0,n3=0;
for(int i=0;i<10;i++){
int a;cin>>a;
if(n1<a){
n3=n2;n2=n1;n1=a;
}
else if(n2<a){
n3=n2;n2=a;
}
else if(n3<a){
n3=a;
}
}

cout<<n1<<endl<<n2<<endl<<n3<<endl;
}

C++: #include<iostream>
using namespace std;
int main()
{
	int a,mountain[10],j,k;
	for(int i=0;i<10;i++){
		cin>>mountain[i];
	}
	for(j=0;j<10;j++){
		for(k=0;k<10-j;k++){
			if(mountain[k]<mountain[k+1]){
				a=mountain[k];
				mountain[k]=mountain[k+1];
				mountain[k+1]=a;
			}
		}
	}
	cout<<mountain[0]<<"\n"<<mountain[1]<<"\n"<<mountain[2]<<"\n";
	return 0;
}

C++: #include <iostream>
#include <algorithm>
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>6;i--)cout << h[i] << endl;return(0);}

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

int main(){
    int i,mount_height[10];
    int no_1=0;
    int no_2=0;
    int no_3=0;

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

    for(i=0;i<10;i++){
        if(mount_height[i]>no_1){
            no_2=no_1;
            no_1=mount_height[i];
        }
        else if(mount_height[i]>no_2){
            no_3=no_2;
            no_2=mount_height[i];
        }
    }

    cout<<no_1<<"\n"<<no_2<<"\n"<<no_3<<"\n";

    return 0;
}