Go: package main
import (
	"fmt"
	"os"
	"strconv"
	"bufio"
)

var sc = bufio.NewScanner(os.Stdin)

func main(){
	for sc.Scan(){
		n := nextInt()
		cnt := 0
		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 <bits/stdc++.h>
using namespace std;
using ll = long long;

int main() {
    int n;
    while(cin >> n) {
        int res = 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) {
                        res += a+b+c+d == n;
                    }
                }
            }
        }
        cout << res << endl;
    }
}

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

int main(){
	int n, ans;

	while(cin >> n){
		ans = 0;

		if(n <= 36){
			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){
								ans++;
							}
						}
					}
				}
			}
		}
		cout << ans << endl;
	}
}

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

int main(){
	int n;
	while(cin >> n){
		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++){
						if(a+b+c+d==n){
							output++;
						}	
					}
				}
			}
		}
		cout << output << endl;
	}
}

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;
    if (sum == n) cnt++;
    }
    }
    }
    cout << cnt << endl;
  }
  return 0;
}

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

int main()
{
	int n;
	while (cin >> n)
	{
		int ans = 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 a,b,c,d,n;
	int num=0;
	
	while(cin >> n){
	
	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)	num++;
				}
			}
		}
	}
	cout << num << endl;
	num = 0;
	}

}

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

int _abs (int n) { return n<0?-n:n; }
int main () {
	int i,n,d,a,T[20]={1},S[10]={4};
	for (i=1;i<20;++i) T[i]=T[i-1]+(i+1)*T[0];
	for (i=1;i<10;++i) S[i]=S[i-1]+(i+1)*S[0];
	while (cin>>n) {
		d=18-_abs(n-18);a=0;
		if (0<=d&&d<=18) {
			for (i=d+1;i--;) a+=T[i];
			if (d>9) for (i=d-9;i--;) a-=S[i];
		}
		cout << a << endl;
	}
}

C++: #include <iostream>
#include<string>
#include<cmath>
#include<algorithm>
#include<cctype>
#include<queue>
#include<stack>
#include<stdio.h>
#include<vector>
#include<set>
#include<map>
#include<iomanip>
#define rep(i,n) for(int i=0;i<n;i++)
typedef int long long ll;

using namespace std;
int main(){
    
    int n;
    while(cin>>n){
        int ans=0;
        rep(i,10){
            rep(j,10){
                rep(k,10){
                    rep(l,10){
                        if(i+j+k+l==n){
                            ans++;
                        }
                    }
                }
            }
        }
        
        
        cout<<ans<<endl;
        
        
        
    }
    
    return 0;
}

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

int main(){
	int n;
	int set;
	while(cin >> n){
		set = 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){
							set += 1;
						}
					}
				}
			}
		}
		
		cout << set << endl;
	}

	return(0);
}

C++: #include<iostream>
using namespace std;
#define RENT 100000
int main(){
	int n;
	while(cin>>n){
		int ans=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;
	}
}

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

int a,b,x;

int mySet(int d){
  for(int i=0;i<10;i++){
    if(d<3){
      mySet(d+1);
    }else if(d==3){
      if(a==x){
      b++;
      }
    }
    a++;
  }
  return a=a-10;
}

int main(void){
  while(scanf("%d",&x)!=EOF){
  mySet(0);
  cout<<b<<endl;
  return 0;
  }
}

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

C++: #include<iostream>
#include<algorithm>
#include<string>
using namespace std;
int main(){
	int count=0;
	int n;
	while(cin>>n){
	for(int i=0;i<10;i++){
		for(int j=0;j<10;j++){
			for(int k=0;k<10;k++){
				for(int x=0;x<10;x++){
					if(i+j+k+x==n)count++;
				}
			}
		}
	}
		cout<<count<<endl;
	}
			
	return 0;
	}

C++: #include <iostream>
using namespace std;
int main(void)
{
  int n;
  int a, b, c, d;
  int com;

  while(1)
    {
      cin >> n;
      if(n == EOF) break;
      com = 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(n == a + b + c + d) com++;
		    }
		}
	    }
	}
      cout << com << endl;;
    }
  return 0;
}

C++: #include "bits/stdc++.h"

#define REP(i,num) for(int i=0;i<(num);++i)
#define ALL(c) c.begin(),c.end()
#define PRINTALL(c) for(auto& x:c){cout<<x<<' ';}cout<<endl;
#define PAIRCOMP(c,comp) [](const pair<ll,ll>& lhs,const pair<ll,ll>& rhs){return lhs.c comp rhs.c;}

using namespace std;
using ll = long long;

constexpr ll atcoder_mod = 1e9+7;

template<typename T=int>
T in(){T x; cin >> x; return (x);}
template<typename T=int,typename C=vector<T>>
C vecin(int N){C x(N);REP(i,N){x[i]=in<T>();}return move(x);}

void vout(){cout << endl;}
template<typename Head,typename... Tail>
void vout(Head&& h,Tail&&... t){cout << ' ' << h;vout(forward<Tail>(t)...);}
void out(){cout << endl;}
template<typename Head,typename... Tail>
void out(Head&& h,Tail&&... t){cout << h;vout(forward<Tail>(t)...);}

int main(){
	cin.tie(0);
	ios::sync_with_stdio(false);
	
	int N;
	while(cin>>N){
		int num=0;
		for(int a=0,ea=min(9,N);a<=ea;a++){
			for(int b=0,eb=min(9,N);b<=eb;b++){
				for(int c=0,ec=min(9,N);c<=ec;c++){
					int d=N-a-b-c;
					if(0<=d && d<=9) num++;
				}
			}
		}
		out(num);
	}

	return 0;
}

C++: #include<iostream>
#include<algorithm>
using namespace std;
int a;
int b;
int main(){
	while (cin>>a)
	cin >> a;
	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){
						b++;
					}
				}
			}
		}
	}
	cout << b << endl;

	return 0;
}

C++: #include <iostream>

using namespace std;
int countSolve(int a,int b,int n);
void solve(int n);

int main() {
	int n;
	while (1) {
		cin >> n ;
		solve(n);
	}
	return 0;
}

int countSolve(int a, int b, int n) {
	int x = n-a-b;
	int count = 0, i = 0 , j=0;
	for (i=0; i<10; i++) {
		for (j=0; j<10; j++) {
			if (x == i+j)
				count++;
		}
	 }
	return count;
}

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

C++: #include <bits/stdc++.h>
using namespace std;
int main() {
  int n;
  while (cin >> n) {
    int cnt = 0;
    for (int i = 0; i = 10; i++) {
      for (int j = 0; j = 10; j++) {
        for (int k = 0; k = 10; k++) {
          if (0 <= n - i - j - k && n - i - j - k < 10) cnt++;
        }
      }
    }
    cout << cnt << endl;
}