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>

int main() {
	int m, n, a, b, c, d;

	while (std::cin >> n) {
		m = 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) {
							++m;
						}
					}
				}
			}
		}
		std::cout << m << std::endl;
	}
	return 0;
}

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

int sum( int num ){

  int 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++;
	  }
	}
      }
    }
  }

  return count;

}

int main(){

  int num;

  while( cin >> num ){
    cout << sum(num) << endl;
  } 

  return 0;
}

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

int main(void){

	while (true){
		int n, count=0;
		cin>>n;
		if (cin.eof()) break;	
		for (int i1=0; i1<10; i1++){
			int n1 = n-i1;
			if (n1 < 0 || n1 > 27) continue;
			for (int i2=0; i2<10; i2++){
				int n2 = n1 - i2;
				if (n2 < 0 || n2 > 18) continue;
				for (int i3=0; i3<10; i3++){
					int n3 = n2 - i3;
					if (n3<0 || n3>9) continue;
					count++;
				}
			}
		}
		cout<<count<<endl;
	}
	return 0;
}

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

int main(){
    int n;
    while(scanf("%d", &n) != EOF){
        int 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>
#include <string>
using namespace std;
int main()
{
	int a = 0, b = 0;
	while (cin >> a)
	{
		b = 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 == a)
						{
							b++;
						}
					}
				}
			}
		}
		cout << b << endl;
	}
	
	return 0;
}

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

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

C++: #include<iostream>

using namespace std;

int main(void){
  int a,b,c,d;
  int n;
  while(cin >> n){
    int 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++; 
	    }
	  }
	}
      }
    }
    cout << count << endl;
  }
  return 0;
}

C++: #include <stdio.h>

int main()
{
	int n;
	int i,j,k,l;
	int ans[51];
	for(i = 0; i < 51; i++){
		ans[i] = 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++){
					ans[i + j + k + l]++;
				}
			}
		}
	}
	scanf("%d",&n);
	if(n < 0){
		printf("0\n");
	}
	printf("%d\n",ans[n]);
	return 0;
}

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

int main()
{
   int n;
   vector<int> r;
   while (scanf("%d",&n) != EOF)
   {
      int count=0;
      for (int a=0; (a<=n && a<10); a++)
      {
	 for (int b=0; (b<=n-a && b<10); b++)
	 {
	    for (int c=0; (c<=n-a-b && c<10); c++)
	    {
	       if (n-a-b-c<10)count++;
	    }
	 }
      }
      r.push_back(count);
   }
   for (int i=0; i<r.size(); i++)
   {
      cout << r[i] << endl;
   }
   return 0;
}

C++: #include <stdio.h>
using namespace std;

int main(void) {
  int sum;
  while (scanf("%d", &sum)+1) {
    if (sum > 36) {
      printf("0\n");
      continue;
    }

    int count = 0;
    int a = 0;
    int b = 0;
    int c = 0;
    int d = 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) == sum) count++;
          }
        }
      }
    }
    printf("%d\n", count);
  }
}

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

int main(int argc, const char * argv[])
{
    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++) {
                    for (int l = 0; l < 10; l++) {
                        if (i+j+k+l == n) {
                            cnt++;
                        }
                    }
                }
            }
        }
        cout << cnt << endl;
    }
    return 0;
}

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

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

  return 0;
}

C++: #include <iostream>
using namespace std;
#define FORMIN(N) ((N > 0) ? N : 0)
#define FORMAX(N) ((N > 9) ? 9 : N)

int main(void)
{
	int n, cnt;
	while(cnt = 0, cin >> n) {
		if(n > 36) {
			cout << 0 << endl;
			continue;
		}
	
		for(int a = FORMIN(n - 27); a <= FORMAX(n); a++) {
			for(int b = FORMIN((n - a) - 18); b <= FORMAX(n - a); b++) {
				for(int c = FORMIN((n - a - b) - 9); c <= FORMAX(n - a - b); c++) {
					cnt++;
				}
			}
		}

		cout << cnt << endl;
	}
	return 0;
}

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

using ll = long long;
#define debug(x) cerr << #x << ": " << x << endl;
#define line() cerr << "---------------" << endl;

int main() {
   int n;
   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++)
            for (int l = 0; l < 10; l++) {
               if (i+j+k+l == n) {
                  cnt++;
               }
            }


   cout << cnt << endl;

   return 0;
}

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

int main() {
	vector<int> count;
	int n;
	while (cin >> n) {
		int r = 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) r++;
					}
				}
			}
		}
		count.push_back(r);
	}
	for (int i = 0; i < count.size(); i++) {
		cout << count[i] << endl;
	}
}

C++: #include <iostream>
using namespace std;
int main(void){
	int a,b=0;
	while(cin>>a){
		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==a) b++;
					}
				}
			}
		}
		cout<<b<<endl;
		b=0;
	}
	return 0;
}

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

int main(){
	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){ans++;}
				}	
			}
		}
	}
	cout << ans << endl;
}