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<iostream>

using namespace std;

int count( int i, int n )
{
  if ( i == 4 )
    if ( n == 0 )
      return 1;
    else
      return 0;
  else
    {
      if ( n < 0 ) return 0;
      
      int ret = 0;
      for ( int j = 0; j < 10; j++ )
        {
          ret += count( i+1, n - j );
        }
      return ret;
    }
}

int main()
{
  int n;
  
  while ( cin >> n )
    cout << count(0, n) << endl;

  return 0;
}

C++: #include <iostream>
#include <vector>
 
int main(void) {
  int n;
  while (std::cin >> n) {
    int ans = 0;
    for (int i = 0; i <= 9; i++) {
      for (int j = 0; j <= 9; j++) {
        for (int k = 0; k <= 9; k++) {
          for (int l = 0; l <= 9; l++) {
            if(i + j + k + l == n)ans++;
          }
        }
      }
    }
    std::cout << ans << std::endl;
  }
  return 0;
}

C++: #include <iostream>

using namespace std;
int countSolve(int a,int b,int n);
int solve(int n);

int main() {
	int n,i=0;
	int a[3];
	while (1) {
		cin >> n ;
		a[i] = solve(n);
		i++;

		if(i == 2) break ;
	}

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

	return 0;
}

int countSolve(int a, int b, int n) {
	int x = n-a-b;
	int count = 0, i = 0 , j=0;
	for (i=0; i<10; i++) {
		for (j=0; j<10; j++) {
			if (x == i+j)
				count++;
		}
	 }
	return count;
}

int solve(int n) {
	int count = 0;
	for (int a=0; a<10; a++) {
		for (int b=0; b<10; b++) {
			count += countSolve(a,b,n);
		}
	}
	return count ;
}

C++: #include<cstdio>
#include<iostream>
using namespace std;
int ans=0;
int n;
class Sumof4Integers{
    public:
        void solve(){ 
            dfs(0,0);
            printf("%d\n",ans);
        }
        void dfs(int d,int sum){ 
            if(d==4){
                if(n==sum)ans++;
                return;
            }
            for(int i=0;i<10;i++){
                dfs(d+1,sum+i);
            }
        }
};
int main(){ 
    Sumof4Integers inst;
    while(cin>>n){
        inst.solve();
        ans=0;
    }
}

C++: #include<iostream>

using namespace std;

int main(){
    int n,result=0;
    cin >> n;
    for (int a = 0; a <= 9; a++){
        for (int b = a; b <= 9; b++){
            for (int c = b; c <= 9; c++){
                for (int d = c; d <= 9; d++){
                    if (a + b + c + d == n)
                    {
                        result++;
                    }
                }
            }
        }
    }

    cout << result / 4 << endl;

    return 0;
}

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

int main() {
  for(int N; cin >> N; ) {
    int ans = 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( N == a + b + c + d )
              ans++;
    cout << ans << endl;
  }
  return 0;
}

C++: //#define _GRIBCXX_DEBUG
#include <algorithm>
#include <cctype>
#include <climits>
#include <cmath>
#include <complex>
#include <cstdio>
#include <cstdlib>
#include <cstring>
#include <ctime>
#include <deque>
#include <functional>
#include <iostream>
#include <iomanip>
#include <list>
#include <map>
#include <memory>
#include <numeric>
#include <queue>
#include <set>
#include <stack>
#include <string>
#include <utility>
#include <vector>
using namespace std;


// ?????¬???????????¬??????
#pragma region MACRO
#define P(x) cout << (x) << endl
#define p(x) cout << (x)
#define PED cout << "\n"
#define rep(i,n) for(int i=0; i<(int)n; ++i)
#define REP(i,x,n) for(int i=x; i<(int)n; ++i)
#define repi(i,n) for(int i=0; i<=(int)n; ++i)
#define REPI(i,x,n) for(int i=x; i<=(int)n; ++i)
#define ILP while(true)
#define FOR(i,c) for(__typeof((c).begin())!=(c).begin(); i!=(c).end(); ++i)
#define ALL(c) (c).begin(), (c).end()
#define mp make_pair
#pragma endregion

#pragma region TYPE_DEF
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<string, string> pss;
typedef pair<string, int> psi;
typedef pair<int, string> pis;
typedef vector<int> vi;
typedef vector<double> vd;
typedef vector<long> vl;
typedef vector<long long> vll;
typedef vector<string> vs;
#pragma endregion


// Effective std
#pragma region ESTD
template<typename C, typename T>
constexpr int count(C& c, T t) { return count(ALL(c), t); }
template<typename C, typename F>
constexpr int count_if(C& c, F f) { return count_if(ALL(c), f); }
template<typename C, typename T, typename U>
constexpr void replace(C& c, T t, U u) { replace(ALL(c), t, u); }
template<typename C, typename F, typename U>
constexpr void replace_if(C& c, F f, U u) { (ALL(c), f, u); }
template<typename C>
constexpr void sort(C& c) { sort(ALL(c)); }
template<typename C, typename Pred>
constexpr void sort(C& c, Pred p) { sort(ALL(c), p); }
template<typename C>
constexpr void reverse(C& c) { reverse(ALL(c)); }
#pragma endregion


// ?´???°
#pragma region PRIME
bool is_prime(unsigned n) {
  switch(n) {
    case 0:
    case 1: return false;
    case 2: return true;
  }
  if (n%2==0) return false;
  for (unsigned i=3; i*i<=n; i+=2)
    if (n%i==0) return false;
  return true;
}
#pragma endregion


// ??§??????/?°?????????????
#pragma region TRANSFORM
void mutal_tr(string &s) {
  for(int i=s.size(); i--;) {
    if(islower(s[i])) s[i] = toupper(s[i]);
    else if (isupper(s[i])) s[i] = tolower(s[i]);
  }
}
void to_upper(string &s) { for(int i=s.size(); i--;) s[i] = toupper(s[i]); }
void to_lower(string &s) { for(int i=s.size(); i--;) s[i] = tolower(s[i]); }
#pragma endregion


// ??????
#pragma region SET
template<class T>
set<T> intersection(const set<T>& sa, const set<T>& sb) {
  set<T> ret;
  for(T a : sa) if(sb.find(a) != sb.end()) ret.insert(a);
  return ret;
}
#pragma endregion

// Union Find
#pragma region UF
struct UnionFind {
  vector<int> data;
  UnionFind(int size) : data(size, -1) {}
  bool union_set(int x, int y) {
    x = root(x); y = root(y);
    if(x!=y) {
      if(data[y] < data[x]) swap(x, y);
      data[x] += data[y]; data[y] = x;
    }
    return x != y;
  }
  bool find_set(int x, int y) { return root(x) == root(y); }
  int root(int x) { return data[x] < 0 ? x : data[x] = root(data[x]); }
  int size(int x) { return -data[root(x)]; }
};
#pragma endregion


// ?????°
#pragma region CONST_VAL
#define PI (2*acos(0.0))
#define EPS (1e-9)
#define MOD (int)(1e9+7)
#pragma endregion

int main()
{
    int n;
    while(cin>>n) {
        int ans = 0;
        rep(i,10) rep(j,10) rep(k,10) rep(l,10) if(i+j+k+l==n) ++ans;
        P(ans);
    }
    return 0;
}

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

int num ;
int count = 0 ;

int main()
{
	while( cin >> num )
	{
		if( num <= 36 )
		{
			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) == num )
							{
								count ++ ;
							}
						}
					}
				}
			}
		}
		cout << count << endl ;

		count = 0 ;
	}

	return 0 ;
}