Go: package main

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

func main() {
        fp := os.Stdin
        scanner := bufio.NewScanner(fp)
        var lst [3]int

        for scanner.Scan() {
                num, _ := strconv.Atoi(scanner.Text())
                if lst[0] < num {
                        lst[2] = lst[1]
                        lst[1] = lst[0]
                        lst[0] = num
                } else if lst[1] < num {
                        lst[2] = lst[1]
                        lst[1] = num
                } else if lst[2] < num {
                        lst[2] = num
                }
        }

        for _, i := range lst {
                fmt.Printf("%d\n", i)
        }
}

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;
}

C++: #include<iostream>
#include<vector>
#include<cstdio>
#include<string>
#include<algorithm>
#include<numeric>
#include<vector>
#include<iostream>
#include<map>

using namespace::std;

int main(void)
{

  vector<int>h(10);

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

  sort( h.begin() , h.end() , greater<int>());

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

  return 0;
}

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

using namespace std;

int main()
{
	vector<int> arr(10);
	
	for(int i = 0; i < 10; i++){
		cin >> arr[i];
	}
	
	sort(arr.begin(),arr.end());
	
	printf("%d\n%d\n%d\n",a[10],a[9],a[8]);
	
	return 0;
}

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

using namespace std;

bool cmp (int i,int j) { return (i>j); }

int main()
{
    vector<int>vc;
    ll n;
    for(ll i = 0; i < 10; i++){
        cin >> n;
        vc.push_back(n);
    }
    sort(vc.begin(), vc.end(), cmp);
    for(ll i = 0; i < 3; i++){
        cout << vc[i] << endl;
    }
    return 0;
}

C++: #include<bits/stdc++.h>
using namespace std;
#define MOD 1000000007
#define INF 999999999
#define FOR(i,a,b) for (int i=(a);i<(b);i++)
#define FFOR(i,a,b) for (int i=(a);i>(b);i--)
#define REP(i,n) FOR(i,0,n)
#define RREP(i,n) for (int i=(n)-1;i>=0;i--)
//#define SORT(c) sort((c).begin(),(c).end())
#define ALL(a) (a).begin(),(a).end()
typedef long long ll;
typedef pair<int,int> P;
typedef vector<int> Vi;
int a[10];
int main(){
  REP(i,10){
	  cin>>a[i];
  }
  sort(a,a+10);
  FFOR(i,9,6){
	  cout<<a[i]<<endl;
  }
  return 0;
}

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

int main()
{
	priority_queue<int,vector<int>,less<int>> que;
	int in;

	for(int i = 0; i < 10; i++){
		cin >> in;
		que.push(in);
	}


	for(int j = 0; j < 3; j++){
		cout << que.top() << '\n';
		que.pop();
	}

	return 0;
}

C++: #include<iostream>
#include<vector>
#include<algorithm>
using namespace std;
  
int main(){
    vector<int> h();
    int in{};
    for(int i=0;i<10;i++){
        cin>>in;
        h.push_back(in);
    }
    sort(h.begin(),h.end());
    cout<<h[9]<<endl;cout<<h[8]<<endl;cout<<h[7]<<endl;
    return 0;
}