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>
#include <vector>
#include <map>
#include <set>
#include <algorithm>
#include <queue>
#include <stack>
#include <cmath>
#include <cstdio>
#include <string>
#include <sstream>

using namespace std;

#define rep(i, n) for(int i = 0; i < (int)n; ++i)
#define repn(i, n) for(int i = 1; i <= (int)n; ++i)
#define pb push_back
#define lb lower_bound
#define mp make_pair
#define ite iterator
#define max2(x, y) ((x) > (y)) ? (x) : (y)
#define max3(x,y,z) max2((x), max2((y),(z)))
#define max4(v,w,x,y) max2(max2((v),(w)), max2((x),(y)))
#define min2(x, y) ((x) > (y)) ? (y) : (x)
#define min3(x,y,z) min2((x), min2((y),(z)))
#define min4(v,w,x,y) min2(min2((v),(w)), min2((x),(y)))
#define ul unsigned long
#define ull unsigned long long
#define INF 1000000007
#define MOD 1000000007
#define fs first
#define sd second

template<typename T>
bool elem(set<T> st, T val){
	return (st.find(val) != st.end());
}

template<typename T>
void printv(vector<T> vt){
    rep(i, vt.size() - 1)
        cout << vt[i] << " ";
    cout << vt[vt.size() - 1] << endl;
}

typedef vector<int> vint;
typedef vector<ul> vul;
typedef vector<ull> vull;
typedef pair<int, int> pii;


int ans[51];
int main(void){
    int n;
    rep(i, 51) ans[i] = -1;
    while(cin >> n){
        int ret = 0;
        if(ans[n] >= 0){
            cout << ans[n] << endl;
            continue;
        }
        rep(a,10){
            rep(b,10){
                rep(c,10){
                    rep(d,10)
                        if(a+b+c+d==n) ret++;
                }
            }
        }
        cout << ret << endl;
        ans[n] = ret;
    }
    return 0;
}

C++: #include<iostream>
using namespace std;
int main(){
int n;
cin>>n;
int counter=0;
for(int a=0;a<10;a++){
for(int b=0;b<10;b++){
for(int c=0;c<10;c++){
if(0<=n-a-b-c && n-a-b-c<=9){
counter++;
}
}
}
}
cout<<counter<<endl;
return 0;
}

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

using namespace std;


int count2=0;

void saiki(int a, int b,int n){
	
}

int main(){
	int n;
	int count2 = 0;
	

	function<int(int, int, int)> x = [=,&count2](int a, int b, int n)->int{
		if (b == 0){
			if (n == a)count2++;
		}
		else{
			for (int i = 0; i < 10; i++){
				saiki(a + i, b - 1, n);
			}
		}
	};

	
	while (cin >> n){
		x(0, 4, n);

		cout << count2 << endl;
	}
	return 0;
}

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

int main(){
  
  vector<int> count_array;
  int count;
  int in_num;
  int a,b,c,d,i=0;
  while(cin>>in_num){
    count=0;
    if(in_num>36)break;
    else{
      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)==in_num){
		count++;
	      }
	    }
	  }
	}
      }
      count_array.push_back(count);
      ++i;
    }
  }
  for(int j=0;j<i;j++){
    cout<<count_array[j]<<endl;
  } 
}

C++: #include <math.h>
#include <iostream>
#include <ios>
#include <iomanip>
#include <algorithm>
#include <functional>
#include <string>

#define YES "YES"
#define NO "NO"
#define space ' '

using namespace std;

void func();

int main(void)
{
	
	func();

	return 0;
}


void func()
{
	

	int n, cnt;
	
	while (cin >> n, !cin.eof()){
		cnt = 0;

		for (int i = 0; i < 10; i++)
		{
			for (int ii = 0; ii < 10;ii++)
			{
				for (int iii = 0; iii < 10;iii++)
				{
					for (int iiii = 0; iiii < 10;iiii++)
					{
						if ((i + ii + iii + iiii) == n)
						{
							cnt++;
							break;
						}

					}
				}
			}
		}

		cout << cnt << endl;
	}
}

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

int main(){
    int n;
    
    while(cin>>n){
    int count=0;
    for(int i=0;i<10; i++){
        for(int s=0;s<10; s++){
            for(int t=0;t<10; t++){
                for(int w=0;w<10; w++){
                    if(i+s+t+w==n)count++;
                }
            }
        }
    }
        cout<<count<<endl;
    }
    return 0;
}

C++: #include<iostream>
using namespace std;
int x,ans;
int main(){
for(){
ans=0;
cin>>x;
if(x=<0)return 0;
for(int i=0;i<10;i++){
for(int j=0;i<10;j++){
for(int k=0;k<10;k++){
if(x-(i+j+k)<10){
ans++;
}
}
}
}
cout<<ans;
}
return 0;
}

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


int main() {
  int n;
  while (cin >> n) {
    int cnt = 0;
    for (int a = 0; a <= 9; a++) {
      for (int b = 0; b <= 9; b++) {
	for (int c = 0; c <= 9; c++) {
	  int d = n - a - b- c;
	  if (0 <= d && d <= 9) cnt++;
	}
      }
    }
    cout << cnt << endl;
  }
  

  return 0;
}

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

int main() {
    int cnt;
    while (1) {
        int num;
        cin >> num;
        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==num) {
                            cnt++;
                        }
                    }
                }
            }
        }
        printf("%d\n",cnt);
    }
    return 0;
}

C++: #include<iostream>
int main(){
	int n;
	while(std::cin>>n){
		int ans=0;
		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)ans++;
					}
				}
			}
		}
		std::cout<<ans<<std::endl;
	}
	return 0;
}

C++: #include<iostream>

using namespace std;

int main(void)
{
  int n;

  while(cin>>n)
  {
    int count;
    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)count++;
              
     cout<<count<<endl;

  }

  return 0;
}

C++: #include<iostream>
using namespace std;
int main(int argc, char const *argv[])
{
	int a;
	while (cin>>a)
	{
		int ans =0;
		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 == a) ans++;
					
			
			cout<<ans;
		
	}
	
	return 0;
}

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

int main(){

	int n,x;
	int i,j,k,l;

	while(std::cin >> n){
		x = 0;
		for(i=1;i<10;i++){
		for(j=1;j<10;j++){
		for(k=1;k<10;k++){
		for(l=1;l<10;l++){
			if(n == i + j + k + l){
				x++;
			}
		}
		}
		}
		}
		std::cout << x << std::endl;
	}
}

C++: #include <iostream>

using namespace std;

int main(void) {
  int n = 0;
  while(true) {
    n = 0;
    cin >> n;

    int num = 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) num++;
          }
        }
      }
    }

    cout << num << '\n';
  }

  return 0;
}

C++: #include <cstdio>

int solve(int n, int r)
{
  if (n == 1) {
    if (r < 10) return 1;
    else return 0;
  } else {
    int a=0;
    for(int i=0;i<10&&r-i>=0;i++){
      a+=solve(n-1,r-i);
    }
    return a;
  }
}

int main()
{
  int n;
  while(~scanf("%d",&n)){
    printf("%d\n",solve(4,n));
  }
}

C++: #include <iostream>

using namespace std;
int main(void){

int input=0;
int output=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++){
			int abcd=a+b+c+d;
				if(abcd==input){
					output++;
				}
			}
		}
	}
}

	cout << output;
}