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 ans = 0;
                if (n <= 9) {
                        for (int a = 0; a <= n; a++)
                                for (int b = 0; b <= n; b++)
                                        for (int c = 0; c <= n; c++)
                                                for (int d = 0; d <= n; d++)
                                                        if (a + b + c + d == n)
                                                                ans++;
                }
                else {
                        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;
        }

        return 0;
}

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

int f(int n){
    if(n > 36) return 0;
    int a[4], count = 0;

    for(a[0] = 0;    a[0] <= 9; a[0]++){
    for(a[1] = a[0]; a[1] <= 9; a[1]++){
    for(a[2] = a[1]; a[2] <= 9; a[2]++){
    for(a[3] = a[2]; a[3] <= 9; a[3]++){
        if(a[0] + a[1] + a[2] + a[3] == n){
            do {
                count++;
            }while(next_permutation(a, a+4));
        }
    }}}}
    return count;
}

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

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

int main(void)
{
	int n;
	char buf[256];
	
	
	while (fgets(buf, 256, stdin) != NULL){
		int ans;

		n = atoi(buf);
		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++;
						}
					}
				}
			}
		}
		printf("%d\n", ans);
	}
	
	return (0);
}

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

using namespace std;

int main(){
  int num,count;
  vector<int> v(4,0) ;
  while(cin >> num){
    count = 0;
    for(int i = 0; i < 10; ++i){
      for(int j = i; j < 10; ++j){
        for(int k = j; k < 10; ++k){
          for(int l = k; l < 10; ++l){
            if(i + j + k + l == num){
              v[0] = i,v[1] =j,v[2] = k;v[3] = l ;
            }
          }
        }
      }
    }
    do{
      ++count ;
    }while(next_permutation(v.begin(),v.end())) ;
    cout << count << endl;
  }
  return 0;
}

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

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

    int n,m;
    while (std::cin >> n) {
        m = 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){
                            m += 1;
                        }
                    }
                }
            }
        }
        std::cout << m << std::endl;
    }
    return EXIT_SUCCESS;
}

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

int main(void){
     int n,i=0;
     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++){
			 if(n == a+b+c+d){
			      i = i+1;
			 }
		    }
	       }
	  }
     }
     cout << i << endl;

     return 0;
}

C++: #include<stdio.h>

int main(){
  int n,n1,n2,n3,n4;
  int i,j,k,l;
  while(scanf("%d", &n) != EOF){
    int m=0;
    for(i=0;i<10;i++){
      n1=n-i;
      for(j=0;j<10;j++){
	n2=n1-j;
	for(k=0;k<10;k++){
	  n3=n2-k;
	  for(l=0;l<10;l++){
	    n4=n3-l;
	    
	    if(n4==0)
	      m++;
	  } 
	} 
      } 
    }
    printf("%d\n",m);
  }
  return 0;
}

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

void solve(int n) {
	int a, b, c, d, ans = 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) ans++;
				}
			}
		}
	}
	printf("%d\n", ans);
}

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

C++: #include<iostream>
#include<cstdio>
#include<algorithm>
#include<cstring>
using namespace std;
int main(){
	int n;
	cin>>n;
	while(cin>>n){
		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==n)count++;
					}
				}
			}
		}
		cout<<count<<endl;
	}
    return 0;
}

C++: #inlcude<cstdio>

int solve(int a,int b){
 
 if(b==4){
  if(a==0) return 1;
  else return 0; 
 }
 else{
  int res=0;
  for(int i=0;i<=a&&i<10;i++){
   res+=solve(a-i,b+1);
  }
  return res;
 }
}

int main(){
 int n;
 while(~scanf("%d",&n)){
  printf("%d\n",solve(n,0));
}
return 0;
}

C++: #include <iostream>
#include <cstdio>
#include <cstdlib>
#include <cctype>
#include <cstring>
#include <sstream>
#include <string>
#include <vector>
#include <map>
#include <set>
#include <list>
#include <stack>
#include <queue>
#include <algorithm>
#include <complex>
#include <iterator>
using namespace std;

typedef pair<int, int> pii;
typedef long long ll;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef vector<string> vs;

#define all(c) (c).begin(), (c).end()
#define rall(c) (c).rbegin(), (c).rend()
#define tr(c, i) for(auto i = (c).begin(); i != (c).end(); i++)
#define rtr(c, i) for(auto i = (c).rbegin(); i != (c).rend(); i++)
#define repfn(i, a, cont, next) \
  for(auto i = (a); [=](){return(cont);}(); i = [=](){return(next);}())
#define repby(i, a, b, step) repfn(i, a, i < b, i + step)
#define repab(i, a, b) repby(i, (a), (b), 1)
#define rep(i, n) repab(i, 0, (n))
#define pb push_back
#define sz(c) int((c).size())

int main(int argc, char **argv)
{
  int n;
  vi v;
  typedef tuple<int, int, int, int> ti4;
  set<ti4> accm;

  while (cin >> n) {
    repab (a, 0, 10) {
      repab (b, 0, 10) {
        repab (c, 0, 10) {
          repab (d, 0, 10) {
            if (a + b + c + d == n) {
              accm.insert(ti4(a, b, c, d));
            }
          }
        }
      }
    }
    cout << sz(accm) << endl;
    accm.clear();
  }
  return 0;
}

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

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

  cout << m << endl;

  return 0;
}

C++: #include <cstdio>
#include <cstdlib>
#include <cmath>
#include <climits>
#include <cfloat>
#include <map>
#include <utility>
#include <set>
#include <iostream>
#include <memory>
#include <string>
#include <vector>
#include <algorithm>
#include <functional>
#include <sstream>
#include <complex>
#include <stack>
#include <queue>
using namespace std;
static const double EPS = 1e-5;
typedef long long ll;
#define FOR(i,n) for(i=0;i<n;i++)
#define rep(i,n) for(int i=0;i<n;i++)

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