Go: package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
)

func main() {
	scanner := bufio.NewScanner(os.Stdin)

	for scanner.Scan() {
		count := 0
		for i := 9; i >= 0; i-- {
			numCpy, _ := strconv.Atoi(scanner.Text())
			if numCpy-i >= 0 {
				for j := 9; j >= 0; j-- {
					numCpyi := numCpy - i
					if numCpyi-j >= 0 {
						for k := 9; k >= 0; k-- {
							numCpyj := numCpyi - j
							if numCpyj-k >= 0 {
								for l := 9; l >= 0; l-- {
									numCpyk := numCpyj - k
									if numCpyk-l == 0 {
										count++
										break
									}
								}
							}
						}
					}
				}
			}
		}
		fmt.Println(count)
	}

}

C++: #include<cstdio>
#include<cstring>
#include<algorithm>
#include<functional>
using namespace std;
int main(void)
{
	int i,j,k,l,n,cnt;
	
	cnt=0;
	while(scanf("%d",&n)!=EOF) {
		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) {
							cnt++;
							printf("%d,%d,%d,%d\n",i,j,k,l);
						}
					}
				}
			}
		}
	}
	printf("%d\n",cnt);
	return 0;
}

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

int main(){
  int n;
  while(cin >>n){

  int count=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) count++;
        }
      }
    }
  }
  cout << count<<endl;
}
}

C++: #include <iostream>

using namespace std;


int main(){
    int t, n, res;
    cin >> t;
    for(int i = 0; i < t; i++){
        cin >> n;
        res = 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) res++;
        cout << res << endl;
    }

    return 0;
}

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

int main () {

int n, count = 0;

    cin >> n;

for (int a = 0; a < 10 && a <= n; a++){
    for (int b = 0; b < 10 && b <= n-a; b++){
        for (int c = 0; c < 10 && c <= n-a-b; c++){
            if (n-a-b-c >=0 && n-a-b-c < 10) {
                count++;
            }
        }
    }
}


    cout << count;


    return 0;

}

C++: #include <iostream>

#define r(i) for(int i=0; i<10; i++)

using namespace std;

int main(){
  int n;
  
  while(cin >> n){
	int a,b,c,d;
	int cnt = 0;

	r(a)r(b)r(c)r(d){
	  if(a+b+c+d == n) cnt++;
	}
	cout << cnt << endl;
  }
  return 0;
}

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

int main() {
    int cnt;
    int num;
    while (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(void)
{
    int input;
    while(std::cin >> input){
        int count = 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 == input){
                            ++count;
                            break;
                        }
                    }
                }
            }
        }
        std::cout << count << std::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;
					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;
}

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

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