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 <iostream>

int main(int argc, const char * argv[])
{
    using namespace std;
    int max = 0;
    int second = 0;
    int third = 0;
    
    int n[10];
    int swap;
    
    for(int i = 0; i < 10; i++) {
        cin >> n[i];
    }
    for(int i = 0; i < 10; i++) {
        if(max < n[i]) {
            if(max > second) {
                swap = second;
                second = max;
                if (swap > third) {
                    third = swap;
                }
            }
            max = n[i];
        }
        else if(second < n[i]) {
            if (third > second) {
                third = second;
            }
            second = n[i];
        }
        else if(third < n[i]) {
            third = n[i];
        }
    }
    
    cout << max << "\n" << second << "\n" << third << "\n";
    return 0;
}

C++: #include<iostream>

using namespace std;

void Swap(int *a,int *b){
	int tmp = *a;
	*a = *b;
	*b = tmp;
}

int main(){

	int a[10];

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

	int i,j;
	for(i=0;i<10;i++){
		for(j=9;j>i;j--){
			if(a[j]<=a[j-1]){
				Swap(&a[j],&a[j-1]);
			}
		}
	}

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

	return 0;
}

C++: #include <stdio.h>
int main()
{
  int f=0,s=0,t=0,m;
  while(scanf("%d",&m)!=EOF){
    if(m>f){
      t=s;
      s=f;
      f=m;
    }else if(m>s){
      t=s;
      s=m;
    }else if(m>t){
      t=m;
    }
  }
  printf("%d\n%d\n%d\n",f,s,t);
  return 0;
}

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

int main() {
  vector <int> V;
  for (auto i=0; i<10; i++) {
    int h;
    cin >> h;
    V.push_back(h);
  }
  sort(V.begin(), V.end());
  reverse(V.begin(), V.end());
  cout << V[0] << endl;
  cout << V[1] << endl;
  cout << V[2] << endl;
}

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

int main(){
    int first,second,third;
    int number;
    
    first=0;
    second=0;
    third=0;
    
    for(int i=0;i<10;i++){
        cin >> number;
        if(number>first){
            third=second;
            second=first;
            first=number;
        }
        else if(number>second){
            third=second;
            second=number;
        }
        else if(number>third){
            third=number;
        }
    }
    
    cout << first << endl << second << endl << third << endl;

    return 0;
}

C++: #include <iostream>
#include <algorithm>
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 = 0; i < 3; i++) {
    cout << n[9-i] << endl;
  }
}

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

using namespace std;

const int numOfMountain = 10;

int main(){
    int mountainBuf;
    vector<int> mountains;

    for(int i = 0; i <= numOfMountain; i++) {
        cin >> mountainBuf;
        mountains.push_back(mountainBuf);
    }

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

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

    return 0;
}

C++: #include <stdio.h>
int main(void) {
	int mt[10];
	int i, j, buf;

	for (i = 0; i < 10; i++){
		scanf("%d", &mt[i]);
	}

	for (i = 0; i < 9; i++){
		for (j = i+1; j < 10; j++){
			if (mt[j] >= mt[i]){
				buf = mt[i];
				mt[i] = mt[j];
				mt[j] = buf;
			}

		}	
	}

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

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

int main(){
  int a[10];
  int tmp;
  int n = 0;

  while(n<10){
    cin >> a[n];
    n++;
  }

  int i,j;

  //降順ソート
  for(i = 0;i < 10;i++){
    for(j = i+1;j < 10;j++){
      if(a[i] < a[j]){
	tmp = a[i];
	a[i] = a[j];
	a[j] = tmp;
      }
    }
  }

  //結果の表示
  for(i = 0;i < 3;i++){
    cout << a[i] << endl;
  }
    return 0;
}

C++: //
//  main.cpp
//  kyougi
//
//  Created by 寺林 一旭 on 2018/08/27.
//  Copyright © 2018年 寺林 一旭. All rights reserved.
//

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

C++: #include <bits/stdc++.h>
using  namespace std;
#define ll    long long int
#define pai     pair<int,int>
#define vi      vector<int>
#define vd      vector<double>
#define mpi     map<int,int>
#define mps     map<string,int>
#define sti     stack<int>
#define stc     stack<char>
#define sei     set<int>
#define ses     set<string>
#define multii  multiset<int>

 int main()
{
  /*#ifndef ONLINE_JUDGE
  freopen("tin.txt","r",stdin);
  freopen("tout.txt","w",stdout);
  #endif*/
vi v;
 ll n;
 while(cin>>n){
    v.push_back(n);

 }
sort(v.begin(),v.end(),greater<int>());
 int c=0;
for(int i=0;i<3;i++){
   cout<<v[i]<<endl;
}
}

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

int main(){
    int a[11]={0};
    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<bits/stdc++.h>
using namespace std;
int main()
{
    int i,s,j,a[10];
    for(i=0;i<10;i++)
    {
        cin>>a[i];
    }
    for(i=0;i<10;i++)
    {
        for(j=i+1;j<10;j++){
            if(a[i]<a[j])
            {
                s=a[j];
                a[j]=a[i];a[i]=s;
            }
        }
    }
    for(i=0;i<3;i++){
        cout<<a[i]<<endl;
    }
}

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

int main()
{
	int input;
	int top[3]={0,0,0};
	for(int i=0;i<10;i++){
		cin>>input;
		for(int j=0;j<3;j++){
			if (input>top[j]){
				top[j]=input;
				break;
			}
		}
	}
	for(int j=0;j<3;j++){
		cout << top[j] << "\n";
	}
}

C++: #include<stdio.h>
#include<math.h>
#include<iostream>
using namespace std;

int main() {
	int i, j, a[10] = {0}, temp;
	for (i = 0; i < 10; i++) {
		cin >> a[i];
	}
	for (i = 0; i < 10; i++) {
		for(j = 0; j < 10; j++) {
			if (a[j] < a[i]) {
				temp = a[j];
				a[j] = a[i];
				a[i] = a[j];
			}
		}
	}
	for (i = 9; i > 6; i--) {
		cout << a[i] << endl;
	}
	return 0;
}

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

int main(){

int h[10];

for(int i=0;i<10;i++)
	scanf("%d",&h[i]);

sort(h,h+10);

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

return 0;		
}

C++: #include<stdio.h>
int main(void)
{
	int a, b, max = 0, max2 = 0, max3 = 0;
	for (a = 1; a <= 10; a++) {
		scanf("%d", &b);
		if (b > max) {
			max = b;
		}
		else if (b > max2) {
			max2 = b;
		}
		else if (b > max3) {
			max3 = b;
		}
	}
	printf("%d\n %d\n %d\n", max, max2, max3);
	return 0;
}

C++: #include <iostream>
#include <algorithm>
#include <vector>
using namespace std;
int main(){
    int x[10],i;
    for(i=0;0<=i && i<10;++i){
        cin>>x[i];
           }
    sort(x);
    cout<<x[0]<<endl;
    cout<<x[1]<<endl;
    cout<<x[2]<<endl;
    return 0;
}

C++: #include<stdio.h>
#include<algorithm>
using std::sort;
main(){
    int x[10],i;
    for(i=0;i<10;i++)
    scanf("%d",&x[i]);
    sort(x,x+10);
    printf("%d\n%d\n%d\n",x[9],x[8],x[7]);
}

C++: #include<bits/stdc++.h>
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 >= 7; i--) {
    cout << h[i] << endl;
  }
  return 0;
}