Go: package main
import (
	"fmt"
	"os"
	"strconv"
	"bufio"
)

var sc = bufio.NewScanner(os.Stdin)

func main(){
	for sc.Scan(){
		n := nextInt()
		cnt := 0
		// 37以上のとき組み合わせは存在しないが省くのめんどくさいのでまとめて計算
		for a:=0; a<=9; a++{
			for b:=0; b<=9; b++{
				for c:=0; c<=9; c++{
					for d:=0; d<=9; d++{
						if a+b+c+d==n{
							cnt++
						}
					}
				}
			}
		}
		fmt.Println(cnt)
	}
}

func next()string{
	//sc.Scan()
	return sc.Text()
}

func nextInt()int{
	a, _ := strconv.Atoi(next())
	return a
}

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

int main( void ){
    int nCount = 0;
    int n[50];
    int m = 0;
    char str[3];
    while( true ){
        gets( str );
        if(( n[m] = atoi(str)) == 0 ) break;
        m++;
    }
    for( int a = 0;a < m;a++ ){
    for( int i = 0;i < 10;i++ ){
        for( int j = 0;j < 10;j++ ){
            for( int k = 0;k < 10;k++ ){
                for( int l = 0;l < 10;l++ ){
                    if( i+j+k+l == n[a] ) nCount++;
                }
            }
       }
    }
    printf( "%d\n",nCount );
    }
    return 0;
}

C++: #include <bits/stdc++.h>
using namespace std;
int main()
{
    int n;
    while (scanf("%d",&n)!=EOF)
    {
        int i,j,k,l,cnt=0;
        for (i=0;i<=9;i++)
            for (j=0;j<=9;j++)
                for (k=0;k<=9;k++)
                    for (l=0;l<=9;l++)
                    {
                        if (i+j+k+l==n)
                        cnt++;
                    }
    cout<<cnt<<endl;

    }
}

C++: #include<iostream>

using namespace std;
            
int main(){

    int n = 0;

    
    while(cin >> n){

        int count = 0;

        for(int a = 0; a < 10; ++a){
            for(int b = 0; b < 10; ++b){
		        for(int c = 0; c < 10; ++c){
		            for(int d = 0; d < 10; ++d){
	        	        if(a + b + c + d == n){
                            count++;
                            break;
                        }
                        
    	            }	
                }	
    	    }	
    	}
        cout << count << endl;
    }
    
	return 0;
}

C++: #include <bits/stdc++.h>
using namespace std;
typedef long long LL;
#define REP(i,N) for(int i = 0; i < (int)N; i++)


int main(){
	int a;
	while(cin >> a){
		int ret = 0;
		REP(i,10)REP(j,10)REP(k,10)REP(l,10){
			if(i+j+k+l == a){
				ret++;
			}
		}
		cout << ret << endl;
	}
	return 0;
}

C++: #include<iostream>

using namespace std;
int N;

int main()
{
    while(cin >> N)
    {
    int Sum = 0;
    for(int a=0; a<=9; a++)
    {
        for(int b=0; b<=9; b++)
        {
            for(int c=0; c<=9; c++)
            {
                for(int d=0; d<=9; d++)
                {
                    if(a+b+c+d == N)
                    {
                        Sum++;
                    }
                }
            }
        }
    }
        cout << Sum << endl;
    }

}

C++: #include <iostream>

using namespace std;

int main()
{
	int n;
	while ( cin >> n ) {
		if (n>18) n = 36 - n;
		cout << ((n+1)*(n+2)*(n+3))/6 << endl;
	}
	
	return 0;
}

C++: #include <math.h>
#include <ctype.h>
#include <bits/stdc++.h>
using namespace std;
#define FOR(i, a, n) for (int i = a; i < n; i++)
#define REP(i, n) for(int i = 0; i < n; i++)
struct omt{omt(){ios::sync_with_stdio(false);cin.tie(0);}}star;

bool binary_search(int x, vector<int> A){
    int l = 0, r = 10, mid;
    while(l < r){
        mid = (l + r) / 2;
        if(x == A[mid]) return true;
        else if(x < A[mid]) r = mid;
        else if(A[mid] < x) l = mid + 1;
    }
    return false;
}

int main(){
    vector<int> A;
    REP(i, 10) A.push_back(i);

    int n;
    while(cin >> n){
        int cnt = 0;
        REP(i, 10){
            REP(j, 10){
                REP(k, 10){
                    int hoge = n - (i + j + k);
                    if(binary_search(hoge, A)) cnt++;
                }
            }
        }
        cout << cnt << endl;
    }


    return 0;
}

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

int main() {
  int n, cnt;
  while (scanf("%d", &n) == 1) {
    cnt = 0;
    for (int a = 0; a < 10; a++) {
      for (int b = 0; b < 10; b++) {
        for (int c = 0; c < 10; c++) {
          for (int d = 0; d < 10; d++) {
            if ((a + b + c + d) == n) {
              cnt++;
            }
          }
        }
      }
    }

    printf("%d\n", cnt);
  }
}

C++: #include <iostream>
#include <cstdio>
#include <algorithm>
#include <cassert>
#include <vector>
#include <string>
#include <cmath>
#include <map> 
#include <sstream>
#include <cstdio>
#include <complex>
#include <cstring>
using namespace std;
 
const int MAX= 10000100;

#define loop(i,a,b) for(int i = a ; i < b ; i ++)
#define rep(i,a) loop(i,0,a)
#define all(a) (a).begin(),(a).end()
#define ll long long int
#define gcd(a,b) __gcd(a,b)
#define pb(a) push_back(a)
int GCD(int a, int b) {if(!b) return a; return gcd(b, a%b);}
int lcm(int a, int b) {return a*b / gcd(a, b);}

int main(void){
  int n;
  while(cin>>n){
    int cnt = 0;
    rep(i,10)rep(j,10)rep(k,10)rep(l,10)
      if(n == i + j + k + l){
	cnt++;
      }
      cout<<cnt<<endl;


  }
    
}

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

using namespace std;

int main(void)
{

	int val,count = 0;
	while (scanf("%d", &val) != EOF)
	{
		for (int a = 0; a < 10; a++)
		{
			for (int b = 0; b < 10; b++)
			{
				for (int c = 0; c < 10; c++)
				{
					for (int d = 0; d < 10; d++)
					{
						if (a + b + c + d == val)count++;

					}

				}


			}


		}

		printf("%d\n", count);
		count = 0;

	}

}

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

int main(){
	int a,b,c,d,n,x;
	while(cin >> n){
		x=0;
		for(a=0;a<10;a++)
		for(b=0;b<10;b++)
		for(c=0;c<10;c++)
		for(d=0;d<10;d++)
		if(a+b+c+d==n) x++;
		
		cout << x << endl;
	}
	return 0;
}

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

using namespace std;

int main() {
	int num[4], n;
	int count = 9;
	int point[10] = {0};

	cin >> n;

	for(int i = 0; i < 4; i++) {
		if(n - count >= 0) {
			n -= count;
			num[i] = count;
		}
		else {
			count--;
			i--;
		}
	}


	for(int i = 0; i < 4; i++) {
		point[num[i]]++;
	}

	int p = 0;

	for(int i = 0; i < 10; i++) {
		p = max(p, point[i]);
	}


	int ans = 1;

	if(p == 4) {
		for(int i = 4; i >= 1; i--) {
			ans *= i;
		}
	}
	else if(p == 3) {
		for(int i = 4; i >= 1; i--) {
			ans *= i;
		}
		ans /= 6;
	}
	else if(p == 2) {
		for(int i = 4; i >= 1; i--) {
			ans *= i;
		}
		ans /= 2;
	}
	else if(p == 1) {
		for(int i = 4; i >= 1; i--) {
			ans *= i;
		}
		ans /= ans;
	}

	cout << ans << endl;
}

C++: #include <iostream>
#include <cstdio>
#include <cmath>
#include <vector>
#include <deque>
#include <list>
#include <string>
#include <stack>
#include <queue>
#include <set>
#include <map>
#include <algorithm>

using namespace std;

int n;

int recur(int num, int dep) {
	int ret = 0;

	if (dep == 0) {
		if (num == 0) return 1;
		else return 0;
	}
	for (int i = 0; i < 10 && i <= num; i++) {
		ret += recur(num - i, dep - 1);
	}

	return ret;
}

int main() {
	n = -1;
	cin >> n;

	while (n != -1) {
		cout << recur(n, 4) << endl;
		
		n = -1;
		cin >> n;
	}

	return 0;
}

/*@@@@@@@@@@@@@@@@@@@@@@@@@*/
/*@                       @*/
/*@ debug output erased ? @*/
/*@                       @*/
/*@@@@@@@@@@@@@@@@@@@@@@@@@*/

C++: #include <iostream>
using namespace std;
int main(void){
    int a, b, c, d, n, count;
    while(cin >> n){
        count = 0;
        for(a=0; a<=9; a++){
            for(b=0; b<=9; b++){
                for(c=0; c<=9; c++){
                    for(d=0; d<=9; d++){
                        if(a+b+c+d == n){
                            count++;
                        }
                    }
                }
            }
        }
        cout << count << endl;
    }
    return 0;
}