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 <vector>
#include <list>
#include <map>
#include <set>
#include <deque>
#include <stack>
#include <bitset>
#include <algorithm>
#include <functional>
#include <numeric>
#include <utility>
#include <sstream>
#include <queue>
#include <iostream>
#include <iomanip>
#include <cstdio>
#include <complex>
#include <cmath>
#include <cstdlib>
#include <cctype>
#include <string>
#include <cstring>
#include <ctime>
#include <fstream>
#include <stdio.h>

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();}

//typedef
//------------------------------------------
typedef vector<int> VI;
typedef vector<VI> VVI;
typedef vector<double> VEC;
typedef vector<VEC> MAT;
typedef vector<string> VS;
typedef pair<int, int> PII;
typedef pair<int, PII> TIII;
typedef long long LL;
typedef vector<LL> VLL;
typedef vector<VLL> VVLL;
//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())
#define MT(a,b,c) MP(a, MP(b, c))
#define T1 first
#define T2 second.first
#define T3 second.second.first
#define T4 second.second.second

//repetition
//------------------------------------------
#define FOR(i,a,b) for(int i=(a);i<(b);++i)
#define REP(i,n)  FOR(i,0,n)
#define EPS 1.0e-9

int main(){
	while(!cin.eof()){
		int ret=0;
		int n;
		cin >> n;
		REP(i,10){
			REP(j,10){
				REP(k,10){
					REP(l,10){
						if(i+j+k+l==n)ret++;
					}
				}
			}
		}
		cout<<ret<<endl;
	}

	return 0;
}

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

using namespace std;

int main(){
 	
  int c,n,i,j,k,l;
  while(cin>>n){
    c=0;
    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(n<i+j+k+l)break;
	    if(n==(i+j+k+l))c++; 
	   
	  }
	}
      }
    }
    
    cout<<c<<endl;
  } 
  return 0;
}

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

#define REP(i, n) for(int i = (0); i < (n); ++i)

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>

int main( void )
{
	int n, count;

	while( std::cin >> n ){
		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( n == a + b + c + d ){
							count++;
							break;
						}
					}
				}
			}
		}

		std::cout << count << std::endl;
	}

	return 0;
}

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

int main(){
	int n;
	int count = 0;
	while(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(a+b+c+d==n) count++;
					
				}
			}
		}
	}
	cout << count << "\n";
}
	return 0;
	
}

C++: #include<stdio.h>

int main(){
    int i,a,b,c,d,n;
    int stack[50],sp=0;
    while(scanf("%d",&stack[sp++])!=EOF);
    for(i=0;i<sp-1;i++){
        n=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(stack[i]==a+b+c+d)n++;
        printf("%d\n",n);
    }
    return 0;
}

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

int main(){
 int n;
 int ans = 0;
 while(true){
 scanf("%d\n",&n);
 if(n == EOF) break;
 ans = 0;
 for(int a = 9;a >= 0;a--){
   for(int b = 9;b >= 0;b--){
     for(int c = 9;c >= 0;c--){
       for(int d = 9;d >= 0;d--){
        if(a+b+c+d == n){ans++; break;}
        if(a+b+c+d < n) break;
       }
     }
   }
 }
 printf("%d\n",ans);
 }
}

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

int main(){

  int n;
  int comb[4][51] = {0};

  for(int i=0; i<10; i++){
    comb[0][i] = 1;
  }

  for(int i=1; i<4; i++){
    for(int j=0; j<9*i+10; j++){
      for(int k=0; k<10; k++){
        if(j-k>=0){
          comb[i][j] += comb[i-1][j-k];
        }
      }
    }
  }

/*  for(int i=0; i<4; i++){
    for(int j=0; j<51; j++){
      cout << comb[i][j] << " ";
    }
    cout << endl;
  }
*/

  while(cin >> n){
    cout << comb[3][n] << endl;
  }

  return 0;
}

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

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

C++: #include<stdio.h>
 
int main(void){
    int a, b, c, d, n = 0;
    int ans = 0;
     
    while(scanf("%d", &n) != EOF){
        ans = 0;
        if(n <= 36){
            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);
        }else{
            printf("0\n");
        }
    }
    return 0;
}

C++: #include<iostream>
using namespace std;
int x,ans;
int main(){
while(1){
ans=0;
cin>>x;
if(x=<0)return 0;
for(int i=0;i<10;i++){
for(int j=0;i<10;j++){
for(int k=0;k<10;k++){
if(x-(i+j+k)<10){
ans++;
}
}
}
}
cout<<ans;
}
return 0;
}

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

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

	while( cin >> n ){
		iCount = 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 )
							iCount++;
					}
				}
			}
		}

		cout << iCount << endl;

	}

	cout << iCount << endl;

	return 0;
}

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

using namespace std;

////Nayeem Shahriar Joy,Applied Physics &Electronic Engineering,University of Rajshahi.

int main()

{
    int count=0,n;
    cin>>n;
    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)
                    {
                        count++;
                    }
                }
            }
        }
    }
    cout<<count<<endl;
}

C++: #include <iostream>
using namespace std;
int main(){
	
	int n;
	while (cin >> n)
	{
		int a, b, c, d, sum = 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){
							sum += 1;
						}
					}
				}
			}
		}
		cout << sum << endl;
	}
	

}

C++: #include <bits/stdc++.h>
using namespace std;
int n;
int main() {
	while(cin >> n) {
		if(n >= 37) continue;
		int ret = 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) ret++;
					}
				}
			}
		}
		cout << ret << endl;
	}
}