Go: package main

import (
	"fmt"
	"sort"
)

func main() {
	mountains := make([]int, 10, 10)

	for i := 0; i < 10; i++ {
		fmt.Scan(&mountains[i])
	}

	sort.Sort(sort.Reverse(sort.IntSlice(mountains)))

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

C++: #include<bits/stdc++.h>
#define FOR(i, a, b) for (int i = (a); i < (b); ++i)
#define REP(i, n) for (int i = 0; i < (n); ++i)
#define int long long
#define vec(a,n) vector<int> (a)((n));
#define Vec(a,n) vector<string> (a)((n));
#define twovec(a,n,m) vector<vector<int>> a(n,vector<int>(m,0));
#define Twovec(a,n,m) vector<vector<double>> a(n,vector<double>(m,0));
#define P pair<int,int>
#define All(a) (a).begin(),(a).end()
#define Sort(a) sort(All(a));
#define Reverse(a) reverse(All(a));
#define PQ(n) priority_queue<P,vector<P>,greater<P>> (n)
#define pq(n) priority_queue<int> (n)
#define print(a) cout << (a) << endl;
#define peintD(a) cout << setprecision(10) << ans << endl;
using namespace std;
int max_int = 1000000007;
void Debug(auto a);
int nibul(auto a,auto b);
int nibuu(auto a,auto b);
void input(vector<int>& a,int n);

int n,m;

signed main(){
    vec(a,10);
    input(a,10);
    Sort(a);
    Reverse(a);
    REP(i,3){
        print(a[i])
    }
    return 0;
}

void Debug(auto a){
    cout << "{ ";
    for(auto b: a){
        cout << b << " ";
    }
    cout << "}" << endl;
}
int nibul(auto a,auto b){
    int x = lower_bound(All(a),b) - a.begin();
    //key以上の初めてのitr
    return x;
}
int nibuu(auto a,auto b){
    int x = upper_bound(All(a),b) - a.begin();
    //key以下の最後のitr
    return x-1;
}

void input(vector<int>& a,int n){
    REP(i,n){
        cin >> a[i];
    }
}

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;
}

C++: #include <iostream>
 
int main() {
  int x;
  int rank1 = 0;
  int rank2 = 0;
  int rank3 = 0;
  for (int i = 0; i < 10; i++) {
    std::cin >> x;
    if (x > rank1) {
      rank3 = rank2;
      rank2 = rank1;
      rank1 = x;
    } else if (x > rank2) {
      rank3 = rank2;
      rank2 = x;
    } else if (x > rank3) {
      rank3 = x;
    }
  }
  std::cout << rank1 << std::endl <<  rank2 << std::endl << rank3 << std::endl;
  return 0;
}

C++: #include<iostream>
using namespace std;
int main()
{
	int height[10];
	int i;
	for(i=0;i<10;i++)
		cin>>height[i];
	int j;
	int temp;
	for(i=9;i>0;i--)
		for(j=0;j<i;j++)
		{
			if(height[j]<height[j+1])
			{
				temp=height[j];
				height[j]=height[j+1];
				height[j+1]=temp;
			}

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

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

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

int main(){

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

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

	for (int 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;

void swap(int& a,int&b)
{
int tmp=a;
a=b;
b=a;
}

void sort(int a[],int n)
{
for(int i=1;i<n;i++)
{
  for(int j=i-1;j>=0;j--)
  {
  if(a[j]>a[j+1])
  break;
  swap(a[j],a[j+1]);
  }
}
}

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

sort(array,10);

for(int i=0;i<3;i++)
cout << array[i] << endl;

return 0;
}

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

int main()
{
	int n[10],i=0;

	while (cin >> n[i])
		i++;
	sort(n,n+i-1,greater<int>());
	for (int j=0; j < 3; j++) {
		cout << n[j] << endl;
	}
	return 0;
}

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

int main()
{
    int height;
    vector<int> top3;

    while (cin >> height) {
        for (auto it = top3.begin(); it != top3.end(); it++) {
            if (height > *it) {
                it = top3.insert(it, height);
                break;
            }
        }
        if (top3.size() > 3)
            top3.pop_back();
        else if (top3.size() < 3)
            top3.push_back(height);
    }
    
    for (auto h: top3)
        cout << h << 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);
	for(int i=0;i<3;i++) {
		printf("%d\n",h[9-i]);
	}
}

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

int main(){
    int height;
    vector<int> heights;
    while (cin >> height)
	heights.push_back(height);
    sort(heights.begin(), heights.end(), greater<int>());
    for (int i = 0; i < 3; i++)
	cout << heights[i] << endl;
}

C++: #include <iostream>

using namespace std;
int data[10];
int temp;
int main()
{
    cout << "Input 10 Data(value = 1-10000): " << endl;
    for(int a = 0;a<10;a++)
    {
        cin >> data[a];
    }

    for(int x=0;x<10;x++)
    {
        for(int y=0;y<10;y++)
        {
            if(data[y]<data[x])
            {
                temp = data[x];
                data[x] = data[y];
                data[y] = temp;
            }
        }
    }
    cout << data[0] << endl;
    cout << data[1] << endl;
    cout << data[2] << endl;
}

C++: #include<cstdio>

int main(){
	int rank[] = {0,0,0};
	int t;
	for(int i = 0; i < 10 ; i++){
		scanf("%d", &t);
		if(t > rank[0]){
			rank[2] = rank[1];
			rank[1] = rank[0];
			rank[0] = t;
		}else if(t > rank[1]){
			rank[2] = rank[1];
			rank[1] = t;
		}else if(t > rank[2]){
			rank[2] = t;
		}
	}
	printf("%d\n%d\n%d\n", rank[0], rank[1], rank[2]);
	return 0;
}

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

int main() {
	int i,a[10];
	for(i=0;i<10;i++){
		cin >> a[i];
	}
	sort(a,a+10);
	cout << a[9] <<endl;
	cout << a[8] <<endl;
	cout << a[7] <<endl;
	return 0;
}

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

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

C++: #include<iostream>
using namespace std;
int main(){
    cin.tie(0);
    ios::sync_with_stdio(false);
    int yama,top1=0,top2=0,top3=0;
    for(int i=0;i<10;i++){
        cin >> yama;
        if(top1<yama){
            top3 = top2;
            top2 = top1;
            top1 = yama;
        }
        else if(top2<yama){
            top3 = top2;
            top2 = yama;
        }
        else if(top3<yama){
            top3 = yama;
        }
    }
    cout << top1 << "\n" << top2 << "\n" << top3 << "\n";
}

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

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

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