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>

int main(){
  int n=10; //?±±?????°
  int height[n];

  //?±±????????????????????????
  //std::cout << "Input 10 of height\n";
  for(int i=0; i<n; i++){
    //std::cout << "mountain:";
    std::cin >> height[i];
  }
  
  //????????????????????????
  for(int i=0; i<n; i++){
    for(int j=n-1; j>i; j--){
      if(height[j-1] < height[j]){
	int k = height[j-1];
	height[j-1] = height[j];
	height[j] = k;
      }
    }
  }
  
  //????????????????±±??????????????¨???
  for(int i=0; i<3; i++){
    std::cout << height[i] << '\n';
  }

  return 0;
  
}

C++: #include<bits/stdc++.h>
using namespace std;
int main(){
  int a[10];
  for(int i=0;i<=9;i++)cin>>a[i];
    sort(a,a+10);
  cout<<a[9]<<endl<<a[8]<<endl<<a[7]<<endl;
}

C++: #include<stdio.h>
#include<algorithm>
main(){int a[10],i;for(i=0;i<10;i++)cin<<a[i];std::sort(a,a+10);printf("%d%d%d\n",a[0],a[1],a[2]);}

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

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

  sort(data.begin(),data.end());
  for(int i=9;i>=7;i--){
    cout << data[i] << endl;
  }
  return 0;
}

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

 int a,b=0;
 for(int j=0;j<3;j++){
   for(int i=0;i<10;i++){
     if(b<n[i]){
       b = n[i];
       a = i;
     }
   }
   cout << b << endl;
   n[a] = 0;
   b = 0;
 }
 
 return 0;
}

C++: #include<iostream>
#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[10]<<endl;
cout<<a[9]<<endl;
cout<<a[8]<<endl;
return 0;
}

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

int main(){
	int i,j,tmp,x;
	int tall[3] = {0};
	int num[10];

	for(i = 0 ; i < 10 ; i++){
		cin >> num[i];
		tmp = num[i];
		for(j = 0 ; j < 3 ; j++ ){
			if(tall[j] <= tmp){
				x = tall[j];
				tall[j] = tmp;
				tmp = x;

			}
		}
	}
	for( i = 0; i < 3 ; i++)
		cout << tall[i] << endl;
    return 0;
}

C++: #include<iostream>

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

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

	for(i=0;i<3;i++){
		for(j=1,max=high[0];j<10;j++){
			if(max<high[j]){
				max=high;
				tmp=j;
			}
		}
		high[tmp]=0;
		std::cout << max << std::endl;
	}
	return 0;
}

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


int main()
{
	using namespace std;

	// \[gÎÛÆ·éReiðpÓ
	deque<int> nums;
	for(int i=0;i<10;i++){
		int temp=0;
		cin>>temp;
		nums.push_back(temp);
	}

	// \[gÀs
	sort( nums.begin(), nums.end(),greater<int>());

	// ÊðoÍ
	deque<int>::iterator it = nums.begin();
	
	for(int i=0;i<3;i++){
		cout << *it << endl;
		++it;
	}

	return 0;
}

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

#define rep(i,n) for(int i=0;i<n;i++)
#define REP(n) rep(i,n)
#define all(n) n.begin(),n.end()

int main()
{
    vector<int> h; int t;
    REP(10){ cin >> t; h.push_back(t);}
    sort(all(h));

    cout << h[9] << endl;
    cout << h[8] << endl;
    cout << h[7] << endl;

    return 0;
}

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

int main(){
  int a[10];
  int i;
  int j;
  for(i=0;i<10;i++){
    cin >> a[i];
      }for(i=0;i<10;i++){
    for(j=9;j>i;j--){
      if(a[j-1]<a[j]){
	int a1=a[j-1];
	  a[j-1]=a[j];
	  a[j]=a1;
      }}}
  for(i=0;i<3;i++)
    cout << a[i] << endl;
    return 0;
  }

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

int main()
{
	int i,ar[20],srt_data[20];
	for(i=0;i<10;i++)
	{
		scanf("%d",&ar[i]);
	}	
	for(i=0; i<10; i++)
	{
		int loc=0;
		for(int x=0; x<10; x++)
		{
			if(ar[i] > ar[x])
				loc++;
		}
		srt_data[loc] = ar[i];
	}
	printf("%d\n%d\n%d\n",srt_data[9],srt_data[8],srt_data[7]);    
    return 0;
}

C++: #include <cstdio>
#include <cstdlib>
#include <cstring>
#include <cmath>
#include <map>
#include <utility>
#include <set>
#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <sstream>
#include <queue>
#include <functional>

using namespace std;

#define REP(i,a,b) for((i)=(a);(i)<(int)(b);(i)++)
#define rep(i,n) REP(i,0,n)
#define foreach(itr,c) for(__typeof((c).begin()) itr=(c).begin();itr!=(c).end();itr++)
template<class T> inline void pretty(T& a,int n){int i;rep(i,n){cout<<a[i];if(n-1==i)cout<<endl;else cout<<" ";}}
template<class T> inline void pretty(T& c){foreach(it,c){cout<<*it;if(distance(it,c.end())!=1)cout<<" ";else cout<<endl;}}


int main(){
  int i,j,k,n;
  vector<int> in(10);

  rep(i,10) cin >> in[i];
  sort(in.begin(),in.end(),greater<int>());
  rep(i,3) cout << in[i] << endl;

  return 0;
}

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

#define N 10

void hoge(){
	int i;
	int h[N];
	for(i=0;i<N;i++){
	 cin>>h[i];
	}
	sort(h,h+N);
	
	cout<<h[9]<<h[8]<<h[7]<<endl;
}

int main(){
	
	hoge();
	
	return 0;
}

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

int main(){
	int val[3]={0};
	for(int i=0;i<10;i++){
		int a;
		cin >> a;
		if(a > val[0]){
			val[2] = val[1];
			val[1] = val[0];
			val[0] = a;
		}else if(a > val[1]){
			val[2] = val[1];
			val[1] = a;
		}
		else if(a > val[0])
			val[2] = a;
	}	
	for(int i=0;i<3;i++)
	cout << val[i] << endl;
}

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

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

	for(short int i=1; i<=10;i++){
		cin >> h[i];
		if(!(0<=h<=10000)){
			i--;
			continue;
		}
	}
	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 n = 0;

int main() {
    int hight[10];

    for (int i = 0; i < 10; i++) {
        cin >> hight[i];
    }
    
    for (int a = 1; a <= 10; a++) {
        for (int x = 0; x < 10; x++) {
            if (hight[x] < hight[x+1]) {
                n = hight[x];
                hight[x] = hight[x+1];
                hight[x+1] = n;
            }
        }
    }
    
    cout << hight[0] << endl;
    cout << hight[1] << endl;
    cout << hight[2] << endl;
    
    return 0;
}

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

C++: #include<iostream>
#include<algorithm>
#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>());
	cout<<m[0]<<endl<<m[1]<<endl<<m[2]<<endl;
	
	
	return 0;
}

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

int main()
{
  int high;
  int temp1,temp2;
  int first=0,second=0,third=0;
  
  for(int i=0;i<10;i++){
    cout<<"山の高さ"<<i<<":";
    cin>>high;
    if(high>first){
      temp1=first;
      first=high;
      temp2=second;
      second=temp1;
      third=temp2;
    } else if (first>=high && high>second){
      temp2=second;
      second=high;
      third=temp2;
    } else if (second>=high && high>third){
      third=high;
    }
  }

  cout<<"1番目に高い山の高さ:"<<first<<endl;
  cout<<"2番目に高い山の高さ:"<<second<<endl;
  cout<<"3番目に高い山の高さ:"<<third<<endl;
  
  return 0;
}