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<queue>
using namespace std;
int main(){
  priority_queue<int> mlist;
  int i;
  for(i=0;i<10;i++){
    int dt;
    cin>>dt;
    mlist.push(dt);
  }
  for(i=0;i<3;i++){
    cout <<mlist.top()<<endl;
    mlist.pop();
  }

  return 0;
}

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

int main()
{
  int mt[10];
  int high[3];

  for(int i=0;i<=9;i++)
    {
      cin >> mt[i];
    }

  for(int i=0;i<=2;i++)
    {
      high[i] = 0;
    }

  for(int i=0;i<=9;i++)
    {
      if(mt[i]>=high[2])
	{
	  high[2] = mt[i];
	}
      if(mt[i]>=high[1])
	{
	  high[2] = high[1];
	  high[1] = mt[i];
	}
      if(mt[i]>=high[0])
	{
	  high[2] = high[1];
	  high[1] = high[0];
	  high[0] = mt[i];
	}
    }

  for(int i=0;i<=2;i++)
    {
      cout << high[i] << endl;
    }

  return 0;
}

C++: #include<stdio.h>
#include<iostream>
using namespace std;
int main(){
	int a = 0,b=0,c=0,d=0;
	for (int i = 0; i < 10;i++){
		cin >> a;
		if (a>b){
			a = b;
			b = c;
			c = d;

		}

	}
	return 0;
}

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

using namespace std;


int main()
{
	int a[11],b=10;
	while (b--) {
		cin >> a[b];
	}
	sort(a, a + 11);
	cout << a[10] << endl << a[9] << endl << a[8] << endl;
	return (0);
}

C++: #include <iostream>
#include <iomanip>
#include <vector>
#include <string>
#include <stack>
#include <queue>
#include <deque>
#include <set>
#include <map>
#include <algorithm>
#include <sstream>
#include <cstdlib>
#include <cstring>
#include <functional>
#include <numeric>
#include <cmath>
#include <climits>
#include <limits>
#include <cfloat>
#include <fstream>
using namespace std;

int main()
{
//	cut here before submit 
//	freopen("testcase.dat", "r", stdin);
	int n;
	vector <int> res(10, 0);
	int i;

	for (i = 0; i < 10; ++i){
		cin >> n;
		res[i] = n;
	} // end for

	sort (res.begin(), res.end(), greater<int>() );
	
	for (i = 0; i < 3; ++i){
		cout << res[i] << endl;
	} // end for
		
	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,tmp=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<iostream>
#include<algorithm>
using namespace std;
int t[10];
int main(){
  for(int i=0;i<10;i++)cin>>t[i];
  sort(t,t+10);
  for(int i=9;i>=7;i--)cout<<t[i]<<endl;
  
  return 0;
}

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

int main() {

	unsigned int height[10];

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

	sort(height, height + 10);

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

	return 0;
}

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

int main() {

	int n[10];

	for (int i = 0; i < 10; ++i) {

		std::cin >> n[i];

	}

	std::sort(n, n + 10);

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

}

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

int main(){
    std::set<int> s = {1819, 2003, 876, 2840, 1723, 1673, 3776, 2848, 1592, 922};
    auto itr = s.begin();
    for(int i = 0; i < 3; ++i) {
        std::cout << *itr << std::endl;
        ++itr;
    }
    return 0;
}

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

void bsort(int m[]){
  for(int i=9;i>0;i--){
    for(int j=0;j<i;j++){
      if(m[j] < m[j+1]){
	int tmp = m[j];
	m[j] = m[j+1];
	m[j+1] = tmp;
      }
    }
  }
  
}

int main(){
  int i,mou[10];
  
  for(i=0;i<10;i++)  cin >> mou[i];

  bsort(mou);
  
  cout << mou[0] << endl << mou[1] << endl << mou[2] << endl;
  
  return 0;
}

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

int main()
{
    cin.tie(0);
    ios::sync_with_stdio(false);
    int in;
    vector<int> v;
    while(cin >> in)
    {
        v.push_back(in);
    }
    sort(v.begin(), v.end(), greater<int>());
    for(auto num : v)
        cout << num << endl;
}

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

	mew taller[3];
	mew a, b, c;

	a = mountain[0];
	b = mountain[1];
	c = mountain[2];

	for (int y = 3; y <= 9; y++) {
		if (a<=b){
			if (a<=c){
				if (a < mountain[y]) {
				???a = mountain[y];}
			}
			else{
				if (c < mountain[y]) {
					c = mountain[y];}
			}
		}
		else if (b<=c)
		{
			if (b < mountain[y]) {
				b = mountain[y];}
		}
	}

	//biggest->taller[0],bigger->taller[1],taller[2]
	{
		if (a >= b&&a >= c)
		{
			taller[0] = a;
			if (b >= c)
			{
				taller[1] = b;
				taller[2] = c;
			}
			else {
				taller[1] = c;
				taller[2] = b;
			}
		}
		if (b >= a&&b >= c)
		{
			taller[0] = b;
			if (a >= c)
			{
				taller[1] = a;
				taller[2] = c;
			}
			else {
				taller[1] = c;
				taller[2] = a;
			}
		}
		if (c >= b&&c >= a)
		{
			taller[0] = c;
			if (b >= a)
			{
				taller[1] = b;
				taller[2] = a;
			}
			else {
				taller[1] = a;
				taller[2] = b;
			}
		}
	} 

	cout << taller[0] << endl;
	cout << taller[1] << endl;
	cout << taller[2] << endl;

        char a____;
        cin>>a____;

	return 0;
}

C++: #include <stdio.h>
const int N = 15;
int main(){
	int a[N] = {0};
	
	for(int i = 0; i < 10; i++)
	{
		scanf("%d", &a[i]);
	}
	for(int i = 0; i < 10; i++)
	{
		for(int j = i; j< 10; j++)
		{
			if(a[i] < a[j])
			{
				int tmp = a[i];
				a[i] = a[j];
				a[j] = tmp; 
			}
		}
	}
	for(int i = 0; i < 3; i++)
	{
		printf("%d\n", a[i]);
	}
	
	
}

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

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

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


int main(void){

	int a[11],i,max1,max2,max3;

	for (int i=1; i<11; i++){
		while (true){ 
		cout << "山の高さ" << i << "（整数）" ;			
		cin >> a[i];
		if ((cin.good() == 1) && (a[i] >= 0) && (a[i] <= 10000)) {
			break;
		}
		}	
	}

	max1 = a[1];

	for (i=2; i<11; i++){
		if (max1 < a[i]){
			swap(max1,a[i]);
		}
	}
	max2 = a[2];

	for (i=3; i<11; i++){
		if (max2 < a[i]){
			swap(max2,a[i]);
		}
	}
	max3 = a[3];

	for (i=4; i<11; i++){
		if (max3 < a[i]){
			swap(max3,a[i]);
		}
	}


		cout << max1 << endl;
		cout << max2 << endl;
		cout << max3 << endl;
		

return 0;
	}

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

int main(){
	int yama[10];
	// int first = 0;
	// int second = 0;
	// int third = 0;

	for(int i=0; i<10; i++){
		cin >> yama[i];
	// 	if(yama[i] > first){
	// 		third = second;
	// 		second = first;
	// 		first = yama[i];
	// 	}
	// 	if(yama[i] > second && yama[i] < first)second = yama[i];
	// 	if(yama[i] > third && yama[i] < second)third = yama[i];
	}

	// cout << first << endl;
	// cout << second << endl;
	// cout << third << endl;
	
	int one,two;//??????????????¨
	for(int k=0; k<10; k++){
		for(int i=0; i<9; i++){
			if(yama[i] > yama[i+1]){
				one = yama[i];
				two = yama[i+1];
				yama[i] = two;
				yama[i+1] = one;

				// for(int j=0; j<10; j++){
				// cout << yama[j] << " ";
				// }
				// cout << endl;
			}
		}
	}

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

	return 0;
}