Go: package main

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

var (
	n  = 10
	sc = bufio.NewScanner(os.Stdin)
)

func main() {
	heights := make([]int, n, n)
	for i := 0; i < n; i++ {
		sc.Scan()
		heights[i], _ = strconv.Atoi(sc.Text())
	}
	sort.Sort(sort.Reverse(sort.IntSlice(heights)))

	for i := 0; i < 3; i++ {
		fmt.Println(heights[i])
	}
}

C++: #include<iostream>
using namespace std;
int main() {
	int a[10],min1=-1,min2=-1,min3=-1, i,j,k,l;
	for (i = 1; i <= 10; i++) {
		cin >> a[i];
	}
	for (j = 1; j <= 10; j++) {
		if (a[j] > min1) {
			min1 = a[j];
		}
	}
	for (k = 1; k <= 10; k++) {
		if (a[k] > min2 && a[k]!=min1) {
			min2 = a[k];
		}
	}
	for (l = 1; l <= 10; l++) {
		if (a[l] > min3&&a[l]!=min2&&a[l]!=min1) {
			min3 = a[l];
		}
	}
	cout << min3 << endl << min2 << endl << min1  << endl;
	return 0;
}

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

using namespace std;

int main()
{
    int a[10];
    int b;
    for(int i = 0; i< 10; i++)
    {
        scanf("%d", &a[i]);

    }

    //排序部分。????排序。
    for(int i = 0; i < 3 ; i++) //?出前三名
    {
        int max = i;
        for(int j = i; j < 10; j++)
        {
            if(a[j] > a[max])
            {
                max = j;
            }
        }
        int temp = a[max];
        a[max] = a[i];
        a[i] = temp;
        printf("%d\n", a[i]);
    }

    return 0;
}

C++: #include<iostream>
using namespace std;
int main()
{	
	int a[10] = {};
	int i = 0;
	while (cin >> a[i]) {
		i++;
		if (i == 10)break;
	}
	int max;
	for (int j = 0; j < 3; j++) {
		max = j;
		for (int k = j + 1; k < 10; k++) {
			if (a[max] < a[k]) {
				max = k;
			}
		}
		cout << a[max] << endl;
		a[max] = 0;
	}
	return 0;
}

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

template <class T> int streamvar(std::istream& in, T& var)
{
    if (!in) {
        return 1;
    }
    in >> var;
    if (in.fail()) {
        return 1;
    }
    return 0;
}
template <class T> int streamvec(std::istream& in, std::vector<T> &v)
{
    v.clear();
    string s;

    if (!in) {
        return 1;
    }
    getline(in, s);
    if (in.fail()) {
        return 1;
    }
    istringstream is(s);
    while (1) {
        T tmp;
        is >> tmp;
        if (is.fail())
            break;
        v.push_back(tmp);
    }
    return 0;
}

int main(void)
{
    vector<int> v;
    int tmp;
    while (!streamvar(cin, tmp)) {
        v.push_back(tmp);
    }
    sort(v.begin(), v.end(), greater<int>());
    cout << v[0] << " " << v[1] << " " << v[2] << endl;
    return 0;
}

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

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

C++: #include<stdio.h>
int main(){
	int l[10],r[10]={-1};
	int i,j,k,c[10]={11},n=0;
	for(i=0;i<10;i++){
		scanf("%d",&l[i]);
	}
	for(j=0;j<10;j++){
		for(i=0;i<10;i++){
			for(k=0;k<10;k++){
				if(c[k]==i){
					n=1;
				}
			}
			if(!(n==1)){
				if(l[i]>=r[j]){
					r[j]=l[i];
					c[j]=i;

				}
			}

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

C++: #include <stdio.h>
#include <algorithm>
#include <iostream>
using namespace std;
int main(){
    int n, i, s, g, a[100];
    for(i=0;i < 10;i++)
    scanf("%d", &a[i]);
    sort(a, a+i);
    printf("%d\n%d\n%d\n", a[9], a[8], a[7]);
    return 0;
    }

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

using namespace std;

int main() {
	int h[10] = { 0 };

	for (int i = 0; i < 10; i++)
	{
		scanf("%d", &h[i]);
		//printf("%d\n", h[i]);
	}

	sort(h, h + 10, std::greater<int>());
	for (int i = 0; i < 3; i++)
	{
		printf("%d\n", h[i]);
	}
	
}

C++: //include----------------------------------------------------------------------------------------------------------------------
#include <bits/stdc++.h>
 
//using namespace--------------------------------------------------------------------------------------------------------------
using namespace std;
 
//define-----------------------------------------------------------------------------------------------------------------------
#define rep(i, n) for(int i = 0; i < (int)n; i++)
#define FOR(i, s, n) for(int i = s; i < (int)n; i++)
#define per(i, n) for(int i = n; i >= 0; i--)
#define ROF(i, s, n) for(int i = s; i >= (int)n; i--)
#define FORIT(i, A) for (auto i : A)
#define PRINT(x) cout << (x) << "\n"
#define ALL(a) (a).begin(),(a).end()
#define RALL(a) (a).rbegin(), (a).rend()
#define PB push_back
#define MP make_pair
#define EACH(i, n) for (__typeof((n).begin()) i = (n).begin(); i != (n).end(); ++i)
#define SZ(a) int((a).size())
#define EXIST(s,e) ((s).find(e)!=(s).end())
#define SORT(c) sort((c).begin(),(c).end())
#define INF 1 << 25
#define CLR(a) memset((a), 0 ,sizeof(a))
#define dump(x) cerr << #x << " = " << (x) << "\n";
#define debug(x) cerr << #x << " = " << (x) << " (L" << __LINE__ << ")" << " " << __FILE__ << "\n";
#define sq(n) (n) * (n)
 
//typedef----------------------------------------------------------------------------------------------------------------------
typedef vector<int> VI;
typedef vector<VI> VVI;
typedef vector<string> VS;
typedef pair<int, int> PII;
typedef long long LL;
typedef unsigned int uint;
typedef unsigned long long ull;
 
//const------------------------------------------------------------------------------------------------------------------------
const double EPS = 1e-10;
const double PI = acos( -1.0 );
 
//global-----------------------------------------------------------------------------------------------------------------------
vector<int> a(10);
 
//function---------------------------------------------------------------------------------------------------------------------
int main() {
    rep( i, 10 ) {
        scanf( "%d", &a[ i ] );
    }
    sort( a.begin(), a.end() );
    ROF( i, 9, 7 ) {
        printf( "%d\n", a[ i ] );
    }
    return 0;
}

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

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

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

	int f = 0, s = 0, t = 0;

	for (int i = 0; i < 9; i++){
		if (height[i] > t){
			t = height[i];
		}
		if (t > s){
			swap(s, t);
		}
		if (s > f){
		swap(f,s);
		}
	}
    
	cout << f<< "\n" << s << "\n" << t << endl;
		return 0;
}

C++: #include<iostream>
#include<stdio.h>
using namespace std;
int main(){
    int i,j,temp,h[10];
    for(i=0;i<10;i++)
    {
        cin>>h[i];
    }
    for(i=0;i<3;i++)
    {
        for(j=0;j<10-i;j++)
        {
            if(h[j]>h[j+1])
            {
                temp=h[j];
                h[j]=h[j+1];
                h[j+1]=temp;
            }
        }
    }
    for(i=9;i>6;i--)
    {
        cout<<h[i]<<endl;
    }
    return 0;
}

C++: #include<iostream>
using namespace std;
int main(){
	int a[10],i,j,n;
	for(i=0;i<10;i++){
		cin>>a[i];
	}
	for(i=0;i<9;i++){
		for(j=i+1;j<10;j++){
			if(a[i]<a[j]){
				n=a[i];
				a[i]=a[j];
				a[j]=n;
			}
		}
	}
	cout<<a[0]<<endl<<a[1]<<endl<<a[2]<<endl;
return 0;
}

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


int main(void)
{
    int i;
    int num[10];

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

    sort(&num[0], &num[9], greater<int>());

    printf("%d\n", num[0]);
    printf("%d\n", num[1]);
    printf("%d\n", num[2]);

    return 0;
}

C++: #include<iostream>
#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;
}