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

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

int main()
{
	int N;
	
	int count = 0;
	
	while(cin >> N)
	{
		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++)
					{
						int s = a + b + c + d;
						if(s == N)count++;
						else if(s > N)break;
					}
				}
			}
		}
	}
	cout << count << endl;
	return 0;
}

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

int main(void)
{
  int n;
  
  const int minVal = 0;
  const int maxVal = 9;
  
  while (std::cin >> n) {
    int count = 0;
    for (int a = minVal; a <= maxVal; a++) {
      for (int b = minVal; b <= maxVal; b++) {
        for (int c = minVal; c <= maxVal; c++) {
          for (int d = minVal; d <= maxVal; d++) {
            if (a + b + c + d == n) {
              count++;
            }
          }
        }
      }
    }
    std::cout << count << std::endl;
  }
}

C++: #include<stdio.h>
#include<iostream>
using namespace std;
int main(){
  int n=0;
  int C=0;
  int a,b,c,d;

  while(scanf("%d",&n)!=EOF){
C=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){
					  C++;
				  }
			  }
		  }
	  }
  }
  cout<<C<<endl;
  }
  return 0;
}

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

int main(void)
{
  int n;
  int counter;
  int a, b, c, d;
  while(cin>>n){
    counter = 0;
    for(a = 1; a <= 9; a++){
      for(b = 1; b <= 9; b++){
	for(c = 1; c <= 9; c++){
	  for(d = 1; c <= 9; d++){
	    if(a+b+c+d==n){
	      counter ++;
	    }
	  }
	}
      }
    }
    cout << counter << endl;
  }
	      

  return 0;
}

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

int main(){
	int num, cou = 0;
	
	while(cin >>num){
		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) == num) cou++;
					}
				}
			}
		}
		cout <<cou<<endl;
		cou = 0;
	}
	
	return 0;
}

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

int main(){
	int n,a,b,c,d,count;
	while(scanf("%d",&n)==1){
	count = 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) count = count + 1;
				}
			}
		}
	}
	printf("%d\n",count);
	}
	return 0;
}

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

int main()
{
	int n, cnt;

	while(cin >> n, n)
	{
		cnt = 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)
						{
							cnt++;
						}
					}
				}
			}
		}

		cout << cnt << endl;
	}
}

C++: #include <iostream>

using namespace std;

bool calc(int a, int b, int n) {
	int tmp = n-a-b;
	for (int c=0; c<10; c++) {
		for (int d=0; d<10; d++) {
			if (tmp == c+d) {
				return true;
			}
		}
	}
	return false;
}

void solve(int n) {
	int count = 1;
	for (int a=0; a<10; a++) {
		for (int b=0; b<10; b++) {
			if (calc(a,b,n)) {
				count++;
			}
		}
	}
	cout << count << endl;
}

int main() {
	int n;
	while (cin >> n) {
		solve(n);
	}
	return 0;
}

C++: #include <bits/stdc++.h>
using namespace std;

int main()
{
  int n;
  while (scanf("%d", &n) != EOF) {
    int cnt = 0;
    for (int a = 0; a <= 9; a++) {
      for (int b = 0; b <= min(n - a, 9); b++) {
        for (int c = 0; c <= min(n - a - b, 9); c++) {
          if (0 <= n - a - b - c && n - a - b - c <= 9) cnt++;
        }
      }
    }
    cout << cnt << endl;
  }
}

C++: #include <iostream>

using namespace std;

int main(){

	int a, b, c, d;
	int n;

	while(cin >> n){

	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 = count +1;
					}
				}
			}
		}
	}

	cout << count <<endl;
}

	return 0;
}

C++: #define _CRT_SECURE_NO_WARNINGS
#define _USE_MATH_DEFINES

#include "bits/stdc++.h"
#define REP(i,a,b) for(int i=a;i<b;++i)
#define rep(i,n) REP(i,0,n)
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
#define ALL(a) begin(a),end(a)
#define ifnot(a) if(not (a))
#define dump(x)  cerr << #x << " = " << (x) << endl
using namespace std;

// #define int ll
#ifdef _MSC_VER
const bool test = true;
#else 
const bool test = false;
#endif

int dx[] = { 0,1,0,-1 };
int dy[] = { 1,0,-1,0 };
#define INF (1 << 28)
ull mod = (int)1e9 + 7;
//.....................
const int MAX = (int)1e5 + 5;

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

C++: #include <iostream>
#include <stdlib.h>
#include <cstdio>
#include <cmath>
#include <cstring>
#include <string>
#include <vector>
#include <stack>
#include <queue>
#include <set>
#include <map>
#include <sstream>
#include <complex>
#include <ctime>
#include <cassert>
#include <climits>
#include <functional>
#include <algorithm>
using namespace std;

typedef long long ll;
#define REP(i,s,t) for(int i=(s);i<(t);i++)
typedef pair<int, int> PII;
typedef pair<ll, ll> PLL;
const int INF = (int)1E9;
#define MAXN 600005
#define vv vector<int>
#define FILL(x,v) memset(x,v,sizeof(x))


int main () {
    int ans[50];
    FILL(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++){
                    ans[a+b+c+d]++;
                }
            }
        }
    }
    int fuck;
    while (cin>>fuck) {
        cout << ans[fuck] << endl;
    }
    return 0;
}

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

int main()
{
	int n;
	int ans;
	
	cin >> n;
	
	while(n > 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){
							ans++;
						}
					}
				}
			}
		}
	}
	
	cout << ans << endl;
	
	return 0;
}

C++: #include <iostream>
using namespace std;
int main() {
	int n, a, b, c, d, cnt = 0;
	while (cin >> n) {
		cnt = 0;
		for (a = 0; a < 10 && a < n; a++) {
			for (b = 0; b < 10 && b < n; b++) {
				for (c = 0; c < 10 && c < n; c++) {
					for (d = 0; d < 10 && d < n; d++) {
						if (a + b + c + d == n) {
							cnt++;
							//break;
						}
					}
				}
			}
		}
		cout << cnt << endl;
	}
	return 0;
}

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;
}