Go: package main

import (
	"fmt"
)

func main() {
	for {
		var a int
		fmt.Scan(&a)
		if a == 0 {
			break
		}
		rs := 0

		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 == a {
							rs++
						}
					}
				}
			}
		}
		fmt.Println(rs)
	}
}

C++: #include <bits/stdc++.h>

using namespace std;

#define Vi vector<int>
#define FOR(i,s,e) for (int i=s; i<e; i++)
#define ITER(v) v.begin(), v.end()

constexpr int n_ints = 4;
constexpr int min_int = 0;
constexpr int max_int = 9;

int main() {
    cin.tie(0);
    ios::sync_with_stdio(false);

    int n;
    cin >> n;

    int res = 0;
    FOR(a,min_int,max_int+1)
    FOR(b,a,max_int+1)
    FOR(c,b,max_int+1)
    FOR(d,c,max_int+1) {
        int sum = a + b + c + d;
        if (sum == n) {
            ++res;
            cout << a << b << c << d << endl;
        }
    }
    cout << res << endl;

    return 0;
}

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

using namespace std;

#define MAX 256

int kai (int x){
	if(x == 1 || x == 0)return 1;
	return x * kai(x - 1);
}

int miku(int x){
	if(x > 36)return 0;
	if(x < 10)return kai(x + 3) / ( kai(x) * 6);
	if(x > 19)return miku(36 - x);
	if(x > 9 && x < 19)return kai(x + 3) / ( kai(x) * 6) - (miku(x - 10) * 4);
}

int main(void){
	int n,i = 0;
	int ans[MAX];
	
	while( cin >> n != EOF){
		ans[i] = miku(n);
		i++;
	}
	
	for(int j = 0;j < i;j++){
		cout << ans [j] <<endl;
	}

	return 0;
}

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

int main(void)
{
	int num, total = 0;

	while (cin >> num) {
		int C[11] = {0};
		C[10] = 4;
		for (int i = 9; i > 0 && num; i--) {
			while (num-i >= 0) {
				C[10]--;
				C[i]++;
				num -= i;
			}
		}
		if (num == 0) {
			total = 24;
			for (int i = 0; i < 11; i++) {
				while (C[i] > 0) {
					total /= C[i];
					C[i]--;
				}
			}
		}
		cout << total << endl;
	}
	
	return 0;
}

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

int main(){
//old
		/* 2014 ??????1
		int a[2],ans;
		cin >> a[0] >> a[1];
		ans = a[0] * a[1];
		cout << ans << endl;
		*/
		/* 2014 ??????2
		int a[6],ans = 0;
		cin >> a[0] >> a[1] >> a[2] >> a[3] >> a[4] >> a[5];
		if(a[0] + a[1] * 5 + a[2] * 10 + a[3] * 50 + a[4] * 100 + a[5] * 500 >= 1000) ans = 1;
		cout << ans << endl;
		*/
		/* 2014 ??????3
		int a,i = 0;
		cin >> a;
		int b[a],c[a],ans[a];
		while(a > i){
			cin >> b[i] >> c[i];
			ans[i] =  b[i] % c[i];
			if(ans[i] == 0) ans[i] = c[i];
			i++;
		}
		i = 0;
		while(a > i){
		cout << ans[i] << endl;
		i++;
		}
		*/
		/* 2014 ??????4
		int a[2],i = 1;
		cin >> a[0];
		int n[a[0]],m[a[0]];
		while (a[0] >= i){
			cin >> n[i] >> m[i];
			i++;
		}
		i = 1;
		cin >> a[1];
		int o[a[1]],p[a[1]];
		while (a[1] >= i){
			cin >> o[i] >> p[i];
			i++;
		}
		i = 1;
		int ii,c,aa;
		aa = a[0] + a[1];
		int ans[aa][2],hh[aa],mm[aa],chk,count = 1;
		while(aa >= i){
			ii = 1;
			chk = 1;
			if(a[0] >= i){
				while(i - 1 >= ii){
					if(n[i] == hh[ii] and m[i] == mm[ii]){
						chk = 0;
					}
					ii++;
				}
				if(chk == 1){ 
					hh[count] = n[i];
					mm[count] = m[i];
					count++;
				}
			}else{
				while(i - 1 >= ii){
					if(o[i - a[0]] == hh[ii] and p[i - a[0]] == mm[ii]){
						chk = 0;
					}
					ii++;
				}
				if(chk == 1){ 
					hh[count] = o[i - a[0]];
					mm[count] = p[i - a[0]];
					count++;
				}		

			}
			i++;
		}
		aa = count - 1;
		i = 1;
		while(aa >= i){
			ii = 1;
			c = 1;
				while(aa >= ii){
						if(hh[i] > hh[ii] or hh[i] == hh[ii] and mm[i] > mm[ii] and i != ii){
							c++;
						}
				ii++;
				}
			ans[c][0] = hh[i];
			ans[c][1] = mm[i];
		 i++;
		}
		i = 1;
		while(aa >= i){
			if(aa == i){
				if(ans[i][1] < 10){
					cout << ans[i][0] << ":" << "0" << ans[i][1] << endl;;
				}else{
					cout << ans[i][0] << ":" << ans[i][1] << endl;;
				}

			}else{
				if(ans[i][1] < 10){
					cout << ans[i][0] << ":" << "0" << ans[i][1] << " ";
				}else{
					cout << ans[i][0] << ":" << ans[i][1] << " ";
				}
			}
			i++;
		}
		//????????°???
		int n,i,ans = 100000,a,risi[2];
		cin >> n;
		for(i = 1;n >= i;i++){
			risi[0] =  ans * 0.05;
			risi[1] = risi[0];
			while(risi[1] >= 1000){risi[1] = risi[1] - 1000;}
				if(risi[1] > 0){risi[0] = risi[0] - risi[1] + 1000;}
			ans = ans + risi[0];
		}
		cout << ans << endl;
		*/
//old
	int in,i[4],ans = 0,s[4] = {0,0,0,0};
	cin >> in;
	for(i[0] = 0;9 >= i[0];i[0]++){
		//if(0 > in - i[0]) break;
		//cout << "[1]" <<  i[0] << endl;				
		for(i[1] = 0;9 >= i[1];i[1]++){
			//if(0 > in - ( i[0] + i[1] ) ) break;
			//cout << "[2]" << i[1] << endl;
			for(i[2] = 0;9 >= i[2];i[2]++){
				//if(0 > in - ( i[0] + i[1] + i[2] ) ) break;
				//cout << "[3]" << i[2] << endl;
				for(i[3] = 0;9 >= i[3];i[3]++){
					//if(0 > in - ( i[0] + i[1] + i[2] + i[3] ) ) break;
					//cout << "[4]" << i[3] << endl;
					//cout << "[1] " << i[0] << "  [2] " << i[1] << "  [3] " << i[2] << "  [4] " << i[3] << endl; 
					if(i[0] + i[1] + i[2] + i[3] == in){
					//cout << "[1] " << i[0] << "  [2] " << i[1] << "  [3] " << i[2] << "  [4] " << i[3] << endl; 
					ans++;
					}
				}	
			}
		}
	}
	cout << ans << endl;
	/*int in;
	cin >> in;
	int a[in];
	for(int i = 1;in >= i;i++){
		cout << "[IN] [" << i << "] ";
		cin >> a[i];
	}
	for(int i = 1;in >= i;i++){cout << "[OUT] ["<< i << "] " <<  a[i] << endl;}*/
}

C++: #include <iostream>
#include <string>
#include <stack>
#include <math.h>
#include <algorithm>
#include <cstdlib>
#include <ctime>
#include <vector>

using namespace std;





int main()
{
	int n;
	int sum;
	int k[19];//k[i]???i?????????????¶?????????§??????????????¨?????????????????????
	while (cin >> n) {
		sum = 0;
		if (n > 36) {
			cout << "0" << endl;
			
		}
		else{
			
			for (int i = 0; i < 19; i++) {
				if (i < 10) {
					k[i] = i + 1;
				}
				else {
					k[i] = 19 - i;
				}
			}
			for (int i = max({0,n-18}); i <= min({ 18,n }); i++) {
				sum += k[i] * k[n - i];
			}
		}
		cout << sum << endl;
	}





}

C++: #include <bits/stdc++.h>

using namespace std;

#define REP(i, n) for(int i = 0; i < n; i++)

int main() {
    int n, cnt = 0;
    while (cin >> n) {
        cnt = 0;
        REP(a, 10) REP(b, 10) REP(c, 10) {
                    int d = n - a - b - c;
                    if (d >= 0 && d <= 9) cnt++;
                }
        cout << cnt << endl;
    }
    return 0;
}

C++: include <iostream>

using namespace std;

int main(){
  int s;
  while(cin >> s){
    int c = 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) == s){
              c++;
            }
          }
	}
      }
    }
    cout << c << endl;
  }

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

using namespace std;

int main() {
	int n;

	while(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++;
						}
					}
				}
			}
		}

		cout << ans << endl;

	}
}

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



int main(void)
{
  int e,f=0;
  int i,j,k,l;
  double Max,Min,ans;
  vector<int> array;
  

  while(cin>>e)
    {
	 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==e)f++;}
			}}
	 }
    array.push_back(f);
	f=0;
    }
  i=0;
  while(i<array.size())
    {
	cout<<array[i]<<endl;
	i++;
    }
  array.clear();
}