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
//------------------------------------------
#include <vector>
#include <list>
#include <map>
#include <set>
#include <deque>
#include <stack>
#include <bitset>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <sstream>
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <cmath>
#include <cstdlib>
#include <cctype>
#include <string>
#include <cstring>
#include <ctime>

using namespace std;

//conversion
//------------------------------------------
inline int toInt(string s) {int v; istringstream sin(s);sin>>v;return v;}
template<class T> inline string toString(T x) {ostringstream sout;sout<<x;return sout.str();}

//math
//-------------------------------------------
template<class T> inline T sqr(T x) {return x*x;}

//typedef
//------------------------------------------
typedef vector<int> VI;
typedef vector<VI> VVI;
typedef vector<string> VS;
typedef pair<int, int> PII;
typedef long long LL;
typedef unsigned long long ULL;

//container util
//------------------------------------------
#define ALL(a)  (a).begin(),(a).end()
#define RALL(a) (a).rbegin(), (a).rend()
#define PB push_back
#define MP make_pair
#define SZ(a) int((a).size())
#define EACH(i,c) for(typeof((c).begin()) i=(c).begin(); i!=(c).end(); ++i)
#define EXIST(s,e) ((s).find(e)!=(s).end())
#define SORT(c) sort((c).begin(),(c).end())

//repetition
//------------------------------------------
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define REP(i,n)  FOR(i,0,n)

//constant
//--------------------------------------------
const double EPS = 1e-10;
const double PI  = acos(-1.0);

//clear memory
#define CLR(a) memset((a), 0 ,sizeof(a))

//debug
#define dump(x)  cerr << #x << " = " << (x) << endl;
#define debug(x) cerr << #x << " = " << (x) << " (L" << __LINE__ << ")" << " " << __FILE__ << endl;

int main() {
  int n, sum, count;

  while(cin >> n) {
    count = 0;
    FOR(a, 0, 10) {
      FOR(b, 0, 10) {
	FOR(c, 0, 10) {
	  FOR(d, 0, 10) {
	    sum = a+b+c+d;
	    if(sum == n)count++;
	  }
	}
      }
    }
    cout << count << endl;
  }
}

C++: #include <iostream>

using namespace std;

int main(){

	int a, b, c, d;
	int n;
	int count;

	while(cin >> n){

	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){
						count = count +1;
					}
				}
			}
		}
	}

	cout << count <<endl;
}
}

C++: #include <cstdio>
#define rep(i,n) for(int i=0;i<=n;++i)
int main(){int r,n;while(scanf("%d",&n)!=EOF){r=0;rep(a,9)rep(b,9)rep(c,9)rep(d,9)if(a+b+c+d==n)r++;printf("%d\n",r);}}

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

int main()
{
	int n = 0;
	int answer = 0;
	int upper =10;
	cin >> n;

	for(int i = 0; i < upper; ++i)
	{
		for(int j = 0; j < upper; ++j)
		{
			for(int k = 0; k < upper;++k)
			{
				for(int l = 0; l < upper; ++l)
				{
					if((i+j+k+l)==n)
					{
						answer++;
					}
				}
			}
		}
	}

	cout << answer << endl;

	return 0;
}

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

int main()
{
	int n;
	while(cin >> n)
	{
		if(n > 36)
		{
			cout << 0 << endl;
			continue;
		}

		int max = (n < 9) ? n : 9;

		int found = 0;
		for(int a = 0; a <= max; a++)
			for(int b = 0; b <= max; b++)
				for(int c = 0; c <= max; c++)
					for(int d = 0; d <= max; d++)
						if(a + b + c + d == n)
							found++;

		cout << found << endl;
	}

	return 0;
}

C++: #include <iostream>
#include <vector>
using namespace std;
 
bool binary_search(vector<int> a, int x){
    int left = 0, right = a.size() - 1;
 
    while (left <= right){
        int mid = (left + right) / 2;
        if (a[mid] == x) return true;
        else if (a[mid] < x) left = mid + 1;
        else right = mid - 1;
    }
    return false;
}
 
int main()
{
    vector<int> vec(19);
    int cnt = 0;
    for (auto& x : vec) x = cnt++;
    int n;
    cnt = 0;
    while (cin >> n){
        for (int i = 0; i < 10; i++){
            for (int j = 0; j < 10; j++){
                if (binary_search(vec, n - i - j)){
                    if (n - i - j == 0 || n - i - j == 18) cnt++;
                    else cnt += 2;
                    //cout << "i:" << i << " j:" << j << "k + l:" << n - i - j << endl;
                }
            }
        }
        cout << cnt << endl;
        cnt = 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 n;
int main() {
	while(cin >> n) {
		int ret = 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) ret++;
					}
				}
			}
		}
		cout << ret << endl;
	}
	return 0;
}

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

C++: #include <iostream>
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;
	}
	return 0;
}

C++: #include <iostream>
using namespace std;
 
int solve(int N){
    int ans = 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){
                    int tmp = i + j + k + l;
                    if(tmp == N) ans++;
                }
            }
        }
    }
    return ans;
}
 
int main(){
    int N;
    while(cin >> N){
        int ans = solve(N);
        cout << ans << endl;
    }
}

C++: #include <iostream>
using namespace std;
int ary[60],res[40];
int main(){
	int N;
	for(int i=1;i<=51;i++){
		cin>>ary[i];
		if(cin.eof()){
			N=i-1;
			break;
		}
	}
	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++){
					res[i+j+k+l]++;
				}
			}
		}
	}
	for(int i=1;i<=N;i++){
		if(ary[i]>=0&&ary[i]<=36)cout<<res[ary[i]]<<endl;
		else cout<<0<<endl;
	}
	return 0;
}

C++: #include<iostream>

int main(){
	int n;
	int count = 0;
	while (std::cin >> n){
		count = 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){
						if (a + b + c >= n - 9 && a + b + c <= n)++count;
					}
				}
			}
		}
		std::cout << count << std::endl;
	}
	return 0;
}