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 <cstring>
using namespace std;
int ans[51];
void rec(int sum, int d){
  if(d == 4){
    ans[sum]++;
    return;
  }
  for(int i = 0 ; i <10; i++){
    rec(sum+i,d+1);
  }
}
void init(){
  memset(ans,0,sizeof(ans));
  rec(0,0);
}
int main(){
  int n;
  init();
  while(cin >> n){
    cout << ans[n] << endl;
  }
  return 0;
}
#include <iostream>
#include <cstring>
using namespace std;
int ans[51];
void rec(int sum, int d){
  if(d == 4){
    ans[sum]++;
    return;
  }
  for(int i = 0 ; i <10; i++){
    rec(sum+i,d+1);
  }
}
void init(){
  memset(ans,0,sizeof(ans));
  rec(0,0);
}
int main(){
  int n;
  init();
  while(cin >> n){
    cout << ans[n] << endl;
  }
  return 0;
}

C++: #include <stdio.h>

int main(void)
{
	int num, cnt = 0;
	int i, j, k, l;

	while( scanf("%d", &num) != EOF){
		for(i = 0; i < 10; i++){
			for(j = 0; j < 10; j++){
				for(k = 0; k < 10; k++){
					for(l = 0; l < 10; l++){
						if(i + j + k + l == num){
							cnt++;
						}
					}
				}
			}
		}
		printf("%d\n", cnt);
		cnt = 0;
	}

	return 0;
}

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

int count(int n){
	int counter = 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){
						counter++;
					}
				}
			}
		}
	}
	return counter;
}

int main(){
	vector<int> results;
	int n;
	while(cin >> n){
		results.push_back(count(n));
	}
	for(auto result : results){
		cout << result << endl;
	}
	return 0;
}

C++: #include <stdio.h>
using namespace std;
#define rep(i,a,n) for(int i=a; i<n; i++)

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

C++: #include<iostream>
#include<iomanip>
#include<algorithm>
#include<cctype>
#include<cmath>
#include<string>
#include<set>
#include<map>
#include<queue>
#include<vector>
using namespace std;

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

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

using namespace std;

int main(){
  int a,b,c,d,sum,n,count=0,num;
  vector<int> nl;
  while(cin >> n){
    nl.push_back(n);
  }

  for(int j=0; j<nl.size(); j++){
    count = 0;
    for(int i=0; i < 10000; i++){
      num = i;
      a = num/1000;num%=1000;
      b = num/100;num%=100;
      c = num/10;num%=10;
      d = num;
      sum = a+b+c+d; 
      if(n == sum){
        count++;
      }
    }

    cout << count << endl;
  }
}

C++: #include<stdio.h>
int main()
{
  int i,j,k,l,cou,n;
  scanf("%d",&n);
  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)cou++;
	}
      }
    }
  }
  printf("%d\n",cou);
  return 0;
}

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

int n;

int d[4][61];

int main(void)
{
	

		for(int i = 0; i <= 9; i++)
			d[0][i]++;
		for(int i = 0; i < 3; i++){
			for(int j = 0; j <= 9; j++){
				for(int k = 0; k <= 9*(i+2); k++){
					d[i+1][k+j] += d[i][k];
				}
			}
		}


	while(cin >> n, n){

		cout << d[3][n] << endl;
	}


	return 0;
}

C++: #include <iostream>

using namespace std;

int main(){
	int L=0,N,A,B,C,D;
	while(cin>>N){L=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){L++;};
				};};};};

	cout<<L<<endl;};
	cin>>L;
		return 0;

}

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

int main(){
	int n;

	while(cin>>n){
		int cc = 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){
							cc ++;
						}
					}
				}
			}
		}
		cout<<cc<<endl;
	}
}

C++: #include<stdio.h>
int main(){
    int n,ans=0;
    while(scanf("%d",&n)!=-1){
        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++;
                        }
                    }
                }
            }
        }
        printf("%d\n",ans);
    }
    return 0;
}

C++: /*
    ????????°??§???????????¨????????????
*/

#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <stdlib.h>
#include <math.h>
#include <time.h>
#include <limits.h>
#include <float.h>
#include <iostream>
#include <algorithm>
#include <string>
#include <iterator>
#include <vector>
#include <map>
#include <utility>
#define LLU unsigned long long int
#define LL long long int
#define LD long double
using namespace std;
#define Lfmax DBL_MAX
#define LLUmax ULLONG_MAX
#define LLmax LLONG_MAX
#define dmax INT_MAX
#define vd vector<int>
#define vLL vector<long long int>
#define vLLU vector<unsigned long long int> 
#define pb push_back
#define mp make_pair
#define fi first
#define sec second
#define debug printf("asd\n")
#define debugd(a) printf("--%d\n",a)
#define debugdd(a,b) printf("--%d %d\n",a,b)
#define debugarr(a,b) for(int i=0 ; i<b ; i++)printf("%d ",a[i]);printf("\n")
#define newline printf("\n")
#define forin(a,b,c) for(int a=b ; a<c ; a++)
#define forde(a,b,c) for(int a=b ; a<c ; a--)


inline void scd(int &a){scanf("%d",&a);}
inline void scdd(int &a,int &b){scanf("%d %d",&a,&b);}
inline void sctd(int &a,int &b,int &c){scanf("%d %d %d",&a,&b,&c);}
inline void scdlld(long int &a,long int &b){scanf("%I64d %I64d",&a,&b);}
inline void sclld(long long int &a){scanf("%I64d",&a);}

#define scarrd(a,b) for(int index=0 ; index<b ; index++)scanf("%d",&a[index])
#define prdlld(a,b) printf("%I64d %I64d",a,b)
#define prdd(a,b) printf("%d %d",a,b)
#define prd(a) printf("%d",a)
#define prarr(a,b) for(int i=0 ; i<b ; i++)printf("%d ",a[i])
#define iniarr(a,b) for(int i=0 ; i<b ;i++)a[i]=0
#define arr(a,b) int *a=(int *)malloc(b*sizeof(int))
#define llarr(a,b) long long int *a=(long long int *)malloc(b*sizeof(long long int))
#define st(a,b) char *a=(char *)malloc(b*sizeof(char))
#define grav 9.8
#define pi 3.14159265

int main()
{
	float n;
	while(scanf("%f",&n)!=EOF)
	{
		int d=0;
		for(int i=0 ; i<=ceil(n/4) ; i++)
		{
			for(int j=0 ; j<=ceil(n/4) ; j++)
			{
				for(int k=0 ; k<=ceil(n/4) ; k++)
				{
					for(int l=0 ; l<=ceil(n/4) ; l++)
					{
						int x=i+j+k+l;
						//printf("--%d %d %d %d == %d\n",i,j,k,l,x);
						if(x==n)
						{
							//printf("%d %d %d %d\n",i,j,k,l);
							d++;
							break;
						}
						
					}
				}
			}
		}
		printf("%d\n",d);
	}
	return 0;
}

C++: #include <iostream>
#include <sstream>
#include <vector>
#include <algorithm>
#include <string>
#include <functional>
#include <numeric>
#include <ctype.h>
#include <cstdlib>
#include <string.h>
#include <cmath>
#include <cstdio>





using namespace std;


int main()
{
	int count = 0, num;

	

	while (cin >> num)
	{
		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 == num)
							count++;
					}
				}
			}
		}
		cout << count << endl;
	}

	

}