Go: package main

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

func getsAsIntArray() (line []int) {
	scanner := bufio.NewScanner(os.Stdin)

	for scanner.Scan() {
		str := scanner.Text()
		if str == "" {
			break
		}
		data, err := strconv.Atoi(str)
		if err != nil {
			break
		}
		line = append(line, data)
	}

	return
}

func main() {

	lines := getsAsIntArray()
	sort.Sort(sort.Reverse(sort.IntSlice(lines)))
	for i, v := range lines {
		if i < 3 {
			fmt.Println(v)
		}
	}
}

C++: #include <stdio.h>

int main(){
	int height[10], rank[3] = {0};
	int i;
	
	for(i = 0; i < 10; i++){
    	scanf("%d\n", &height[i]);

        if (rank[0] < height[i]){
        	rank[2] = rank[1];
        	rank[1] = rank[0];
        	rank[0] = height[i];
        }else if (rank[1] < height[i]){
        	rank[2] = rank[1];
        	rank[1] = height[i];
        }else if (rank[2] < height[i]){
        	rank[2] = height[i];
        }
    }

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

	return 0;
}

C++: #include<iostream>
using namespace std;
int main()
{
int i,h,m1,m2,m3;
m1=0;
m2=0;
m3=0;
for(i=0;i<10;i++)
{
	cin>>h;
	if(h>m1)
	{
		m3=m2;
		m2=m1; 
		m1=h;
	}
	else if(h>m2)
	{
		m3=m2;
		m2=h;
	}
	else if(h>m3)
	{
		m3=h;
	}
}
cout<<m1<<endl;
cout<<m2<<endl;
cout<<m3;
return 0
}

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

int main(){
	int mount[10];
	int i;
	for (i = 0; i < 10; i++) {
		cin >> mount[i];
	}
	int top = 0;
	int second = 0;
	int third = 0;

	for (i = 0; i < 10; i++) {
		if (third <= mount[i]){
			third = mount[i];
			if (second < mount[i]){
				third = second;
				if (top <= mount[i]){
					second = top;
					top = mount[i];
				}
				else
				{
					second = mount[i];
				}
			}
		}
	}

	cout << top << endl << second << endl << third << endl;
	cin >> i;
	return 0;
}

C++: #include<stdio.h>
int main(void){
	int h[10],i,m[3]={};
	
	for(i=0;i<10;i++){
		scanf("%d",&h[i]);
		if(m[2]<h[i]){
			m[2]=h[i];
		}
		if(m[1]<h[i]){
			m[1]=h[i];
		}
		if(m[0]<h[i]){
			m[0]=h[i];
		}
	}
	for(i=0;i<3;i++)
	printf("%d\n",m[i]);
	return 0;
}

C++: #include<iostream>
#define element 10

using namespace std;

int height[element];
int number;
int main()
{
 for(int i=0;i<element;++i)
 {
  cin >> height[i];
 }
 for(int i=0;i<element;++i)
 {
  for(int j=i;j<element;++j)
  {
   if(height[i]<height[j])
   {
    number = height[i];
    height[i] = height[j];
    height[j] = number;
   }
  }
 }
 printf("%d\n%d\n%d\n",height[0],height[1],height[2]);
 return 0;
}

C++: #include <string>
#include <vector>
#include <iostream>
#include <stdio.h>
#define _USE_MATH_DEFINES
#include <cmath>
#include<algorithm>
using namespace std;
int main()
{
    int a[10];
    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<bits/stdc++.h>
using namespace std;
int main(){
  int n[10];
    for(int i=0;i<10;i++)
      cin>>n[i];
  sort(n,n+10);
  for(int i=9;i>=7;i--){
    cout<<n[i]<<endl;
  }
  return 0;
}

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

int a[10];

int main(){

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

  sort(a,a+10);

  for(int i=9;i>6;i--){
    cout << a[i] << endl;
  }
}

C++: #include<iostream>
using namespace std;
int main(){
	int t1=0,t2=0,t3=0,T=0;
	for(int i=0;i<10;i++){
		cin>>T;
		if(T>=t1){
			t3=t2;
			t2=t1;
			t1=T;
		}
		else if(T>=t2){
			t3=t2;
			t2=T;
		}
		else if(T>=t3){
			t3=T;
		}
	}
	cout<<t1<<endl<<t2<<endl<<t3<<endl;
	return 0;
}

C++:  /*
Write a program which computes the digit number of sum of two integers a and b
 */

#include <iostream>
  
using namespace std;  
  
// ??\???  
int a, b;  
  
void solve()  
{  
    int res = 0;  
  
    a += b;  
  
    for (; a; a /= 10)  
        res++;  
  
    cout << res << endl;  
}  
  
int main()  
{  
    while (cin >> a >> b)  
        solve();  
  
    return 0;  
}

C++: #include <iostream>
#include <vector>
#include <algorithm>
using namespace std;
int main( void )
{
  vector<int> d;
  int x;
  for( int i=0; i<10; i++ ){
    cin >> x;
    d.push_back( x );
  }
  sort( d.begin(), d.end(), greater<int>() );
  for( int i=0; i<3; i++ ) cout << d[i] << endl;
  return 0;
}

C++: #include <iostream>
#include <stdio.h> //printf()

using namespace std;

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

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

    //bubble sort
    //??????????????????

    j = 3;
    while (j-- > 0) {
        for (i = 0; i < 9; i++) {
            if (A[i] > A[i+1]) {
                tmp = A[i+1];
                A[i+1] = A[i];
                A[i] = tmp;
            }
        }
    }

    printf("%d\n", A[9]);
    printf("%d\n", A[8]);
    printf("%d\n", A[7]);

    return 0;
}

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

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

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

using namespace std;

int main() {
  array<int, 10> h;
  for (int& i : h) cin >> i;
  partial_sort(h.begin(), h.begin() + 3, h.end(), greater<int>());
  for (int i = 0; i < 3; ++i) cout << h[i] << endl;
}

C++: #include<bits/stdc++.h>
using namespace std;
#define FOR(i,a,b) for (int i=(a);i<(b);i++)
#define RFOR(i,a,b) for (int i=(b)-1;i>=(a);i--)
#define REP(i,n) for (int i=0;i<(n);i++)
#define RREP(i,n) for (int i=(n)-1;i>=0;i--)
typedef long long LL;
vector<LL>v;
int main(){
	REP(i,10){
	    LL a;
	    cin>>a;
	    v.push_back(a);
	}
        sort(v.begin(),v.end());
        reverse(v.begin(),v.end());
	
	REP(i,3){
           cout<<v[i]<<endl;
        }
	return(0);
}

C++: #include <iostream>
#include <cstdio>
#include <cmath>
#include <vector>
#include <deque>
#include <list>
#include <string>
#include <stack>
#include <queue>
#include <set>
#include <map>
#include <algorithm>

using namespace std;

vector<int> height;

int main() {
	for (int i = 0; i < 10; i++) {
		int input;
		cin >> input;
		height.push_back(input);
	}

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

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

	return 0;
}

/*@@@@@@@@@@@@@@@@@@@@@@@@@*/
/*@                       @*/
/*@ debug output erased ? @*/
/*@                       @*/
/*@@@@@@@@@@@@@@@@@@@@@@@@@*/

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

int main(){
	short int h[10]={};
	

	for(short int i=1; i<=10;i++){
		cin >> h[i];
		if(!(0<=h<=10000)){
			i--;
			continue;
		}
	}
	cout<<endl;
	sort(h, h+10, greater<int>());
	for(short int i=0;i<3;i++){
		cout << h[i] << endl;
	}
	return 0;
}

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

int main() {
	int a = 0, b = 0, c = 0, h;
	for(int i = 0; i < 9; ++i){
		cin >> h;
		if(a < h){
			c = b;
			b = a;
			a = h;
		}
		else if(b < h){
		    c = b;
		    b = h;
		}
		else if(c < h){
			c = h;
		}
	}
	cout << a << endl << b << endl << c << endl;
	return 0;
}

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

int main(){
    
    int i;
    int max1, max2, max3;
    std::array <int, 10> hill;
    
    max2 = 0;
    max3 = 0;

    for (i = 0; i < 10; ++i) {
        std::cin >> hill.at(i);
        
        if (i == 0) max1 = hill.at(0);
        
        if (max1 < hill.at(i)) { 
            max2 = max1;                    
            max1 = hill.at(i);
        } else if (max2 < hill.at(i)) {
            max3 = max2;
            max2 = hill.at(i);
        } else if (max3 < hill.at(i)) max3 = hill.at(i);
        else {}
    }
    
    std::cout << max1 << std::endl << max2 << std::endl << max3 << std::endl;
    
    return 0;
}