Go: package main

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

var maxint = 10000
var scanner = bufio.NewScanner(os.Stdin)

func nextInt() (int, error) {
	scanner.Scan()
	return strconv.Atoi(scanner.Text())
}

func main() {
	scanner.Split(bufio.ScanWords)
	arr := make([]int, 10)
	for i := range arr {
		n, _ := nextInt()
		arr[i] = n
	}

	sort.Slice(arr, func(i, j int) bool {
		return arr[i] >= arr[j]
	})

	arrStr := fmt.Sprintf("%+v", arr[0:3])
	arrStr = arrStr[1:(len(arrStr) - 1)]
	arrStr = strings.Replace(arrStr, " ", "\n", -1)
	fmt.Println(arrStr)
}

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

int main(){

	int hill[]={0,0,0,0,0,0,0,0,0,0};

	for(int j=0;j<=9;j++){
		scanf("%d",&hill[j]);
	}

	int key;

	//sort
	for(key=9;key>=0;key--){

		for(int i=0;i<=key;i++){
			if(hill[i]>hill[i+1]){
				swap(hill[i],hill[i+1]);
			}
		}

	}

	printf("%d%d%d",hill[9],hill[8],hill[7]);

	return 0;

}

C++: a = Array.new
10.times do
	n = gets.to_i
	a.push n
end
a.sort!
puts "#{a[9]} #{a[8]} #{a[7]}"

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

int main(void) {
  int a[10], i;
  for(i = 0; i < 10; ++i)scanf("%d", &a[i]);
  std::sort(a, a + 10);
  for(i = 9; i >6; --i) printf("%d\n", a[i]);
  return 0;
}

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

#define for_(i,a,b) for(int i=(a);i<(b);++i)

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

C++: #include <iostream>
#include <algorithm>
#include <vector>
#include <string>
#include <stack>
#include <queue>
#include <map>
#include <set>
#include <cstdio>
#include <cstring>
#include <cmath>
#include <climits>
#define LL long long
const double pi=acos(-1.0);
using namespace std;
const int maxm = 20;
const double eps = 1e-6;
int cmp(const void *a,const void *b)
{
    return *(int*)b-*(int*)a;
}
int main()
{
    int a[10];
   for(int i=0;i<10;i++)
    scanf("%d",&a[i]);
   qsort(a,10,sizeof(int),cmp);
   printf("%d\n%d\n%d\n",a[0],a[1],a[2]);
   return 0;
}

C++: #include<stdio.h>
int main(void){
    int d,m1=0,m2=0,m3=0,i;
    for(i=0;i<10;i++){
        scanf("%d",&d);
        if(d>m1){
            m3=m2;
            m2=m1;
            m1=d;
        }else if(d>m2){
            m3=m2;
            m2=d;
        }else if(d>m3){
            m3=d;
        }
    }
    printf("%d\n",m1);
    printf("%d\n",m2);
    printf("%d\n",m3);
    return 0;
}

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

int main() {
    vector<int> v;
    for(int i = 0; i < 10; i++) {
        int x;
        cin >> x;
        v.push_back(x);
    }
    sort(v.begin(), v.end());
    string str;
    for(int i = 9; i >6; i--) {
        str += to_string(v[i]);
        str += "\n";
    }
    str.pop_back();
    cout << str << endl;
}

C++: #include <bits/stdc++.h>
using namespace std;
int a[10];
int main() {
	for(int i = 0; i < 10; i++) scanf("%d", &a[i]);
	sort(a, a + 10, greater<int>());
	for(int i = 0; i < 3; i++) printf("%d\n", a[i]);
	return 0;
}

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

void swap(int &x, int &y) {
	int a;
	a = x;
	x = y;
	y = a;
}

int main() {
	int a[10],max,mid,min;
	for (int i=0; i<10; i++) {
		cin >> a[i];
	}
	max = a[0];
	mid = a[1];
	min = a[2];
	if (mid > max) {
		swap(max,mid);
	}
	if (min > max) {
		swap(min,max);	
	}
	if (min > mid) {
		swap(min, mid);
	}
	for (int j=3; j<10; j++) {
		if (a[j] > max) {
			min = mid;
			mid = max;
			max = a[j];
		}else if (a[j] > mid) {
			min = mid;
			mid = a[j];
		}else if (a[j] > min) {
			min = a[j];
		}
	}
	cout << max << endl << mid << endl << min << endl;
}

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

using namespace std;

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

C++: #include<bits/stdc++.h>
using namespace std;
int main()
{
    int arr[15];
    for(int i=0;i<10;i++)
    {
        scanf("%d",&arr[i]);
    }
    sort(arr,arr+10);
    printf("%d\n%d\n%d\n",arr[9],arr[8],arr[7]);
    return 0;
}

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

int main() {
    return []() {
        std::function<void()> input;
        std::vector <int> list;
        (input = [&input, &list]() {
            int data;
            if ( std::cin >> data ) {
                list.push_back( data );
                input();
            } else {
                sort( list.rbegin(), list.rend() );
                for_each(
                    list.begin(),
                    list.begin() + 3,
                    [](int x){ std::cout << x << std::endl; }
                );
            }
        })();
        return 0;
    }();
}

C++: #include<iostream>
#include<vector>
#include<algorithm>
using namespace std;int main(){int n,i;vector<int> h;for(i=0;i<10;++i)cin>>n,h.push_back(n);sort(h.begin(),h.end());for(i=9;i>6;i--)cout<<h[i]<<endl;}

C++: #include <vector>
#include <list>
#include <map>
#include <set>
#include <deque>
#include <stack>
#include <bitset>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <sstream>
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <ctime>
#include <cstring>
 
using namespace std;

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

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

using namespace std;

const int numOfMountain = 10;

int main(int argc, char** argv){
    int mountainBuf;
    vector<int> mountains;

    for(int i = 0; i <= numOfMountain; i++) {
        mountainBuf = atoi(argv[i]);
        mountains.push_back(mountainBuf);
    }

    sort(mountains.begin(), mountains.end());

    __wrap_iter out = mountains.end();
    for(int i = 0; i < 3; i++) {
        cout << *--out << endl;
    }

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

C++: #include<iostream>
using namespace std;
int main(){
  int a[10];
  for(int i=0;i<10;i++){
    cin>>a[i];
  }

  int temp;
  for(int i=9;i>=7;i--){
    for(int j=0;j<i;j++){
        if(a[i]<a[j]) {
          temp=a[i];
          a[i]=a[j];
          a[j]=temp;}
    }
    cout<<a[i]<<endl;
  }
  return 0;
}

C++: #include<iostream>

using namespace std;


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

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

int main(){
  int n[10];

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

  for(int j=0; j<3; j++) {
    cout << n[9-j] << "\n";
  }
  return 0;
}

C++: #include <iostream>

using namespace std;

void swap(int &x1, int &x2)
{
	int tmp = x1;
	x1 = x2;
	x2 = tmp;
}

int main()
{
	int h1, h2, h3;
	h1 = h2 = h3 = 0;

	for (int i = 0; i < 10; i++) {
		int x;
		cin >> x;
		if (x > h3) {
			swap(x, h3);
			if (h3 > h2) {
				swap(h3, h2);
				if (h2 > h1) {
					swap(h2, h1);
				}
			}
		}
	}
	cout << h1 << endl;
	cout << h2 << endl;
	cout << h3 << endl;
	return 0;
}

C++: #include <iostream>

using namespace std;

int main(int argc, const char * argv[])
{
    int height[10];
    for (int i=0; i<10; i++) {
        cin >> height[i];
    }
    sort(height, height+10, greater<int>());
    
    for (int i=0; i<3; i++) {
        cout << height[i] << endl;
    }
    
    return 0;
}