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 num;
	cin >> num;

	while(cin>>num){
		int answer = 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)
							answer++;
				}
			}
		}
		cout <<answer<<endl;
	}

	return 0;	
}

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

int main(){
    int n;
    while(scanf("%d",&n) != EOF){
        int ans = 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)
                            ++ans;
        cout << ans << endl;
    }

    return 0;
}

C++: #include<bits/stdc++.h>
#define rep(i,n) for(int i=0; i<n; i++)
using namespace std;
int main(){
  int n;
  while(cin >> n){
    int count = 0;
    rep(i,10){
      rep(j,10){
        rep(k,10){
          rep(l,10){
            if(i+j+k+l == n) count++;
          }
        }
      }
    }
    cout << count << endl;
  }
  return 0;
}

C++: #include <iostream>
#include <string>
#include <algorithm>

using namespace std;


// cin >>
// cout <<
int main(){
	int in=0;
	int out=0;
	cin >>in;
	if(!cin.eof()){
	    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==in){
					    out++;	
					    }	
				    }
			    }
		    }
	    }
	}
	cout <<out;
	
	return 0;
}

C++: #include <math.h>
#include <iostream>
#include <ios>
#include <iomanip>
#include <algorithm>
#include <functional>
#include <string>

#define YES "YES"
#define NO "NO"
#define space ' '

using namespace std;

void func();

int main(void)
{
	
	func();

	return 0;
}


void func()
{
	

	int n, cnt;
	
	while (cnt = 0, cin >> n, !cin.eof()){


		for (int i = 0; i++ < 9;)
		{
			for (int ii = 0; ii++ < 9;)
			{
				for (int iii = 0; iii++ < 9;)
				{
					for (int iiii = 0; iiii++ < 9;)
					{
						if (i + ii + iii + iiii == n)
							cnt++;

					}
				}
			}
		}

		cout << cnt << endl;
	}
}

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


int main(void) {
	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 += 1;
						}
					}
				}
			}
		}
	}
		cout << count << endl;
	return 0;
}

C++: #include <bits/stdc++.h>
using namespace std;
int main(void){
    int n,count;
    count = 0;
    while (cin >> n) {
        for (int i=9;i>-1;i--) {
            if (n-i>=0) {
                for (int j=9;j>-1;j--) {
                    if (n-i-j>=0) {
                        for (int k=9;k>-1;k--) {
                            if (n-i-j-k>=0) {
                                for (int l=9;l>-1;l--) {
                                    if (n-i-j-k-l==0) {
                                        count++;
                                    }
                                }
                            }
                        }
                    }
                }
            }
        }
        cout << count << endl;
        count = 0;
    }
}

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

int main() {
	int n;
	while(scanf("%d", &n) != EOF) {
		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++;
					}
				}
			}
		}
		printf("%d\n", ans);
	}
	return 0;
}

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

int main ()
{
    int	n;

    while (cin >> n) {
        int res = 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) res++;
                    }
                }
            }
    	}

        cout << res << endl;
    }

    return 0;
}

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

C++: #include <iostream>

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

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

C++: #include <iostream>

using namespace std;

// naive but easy to implement
int calc(int n)
{
  int count = 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){
            count++;
          }
        }
      } 
    }
  }

  return count;
}

int main(int argc, char const* argv[])
{
  int n;
  while (cin >> n) {
    cout << calc(n) << endl;
  };
  return 0;
}

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

int main(){
  int a,b,c,d,n;
  int ans=0;
  while(scanf("%d",&n) != EOF){
    ans = 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)ans++;
	  }
	}
      }
    }
    cout<<ans<<endl;
  }
    return 0;
}

C++: #include<map>
#include<set>
#include<list>
#include<cmath>
#include<queue>
#include<stack>
#include<cstdio>
#include<string>
#include<vector>
#include<complex>
#include<cstdlib>
#include<cstring>
#include<climits>
#include<numeric>
#include<sstream>
#include<iostream>
#include<algorithm>
#include<functional>

using namespace std;

int main(){
	int n,cnt=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){
							cnt++;
						}
					}
				}
			}
		}
	cout << cnt << endl;
	cnt=0;
	}
}

C++: #include <iostream>
#define rep(i,a) for(int i=0;i<a;++i)

using namespace std;

int main(void)
{
	int n;
	while(cin >> n)
	{
		int a[4] = {};
		int count = 0;
		rep(i,10)
		{
			rep(j,10)
			{
				rep(c,10)
				{
					rep(d,10)
					{
						if(i+j+c+d == n)
							++count;
					}
				}
			}
		}
		cout << count << endl;
	}
	return 0;
}

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

int main() 
{
	int a, b, c, d;
	int n;
	int count = 0;
	while (1) 
	{
		cin >> n;
		if (n >= 0 && n <= 50)
		{
			for (a = 0; a <= 9; a++) {
				for (b = 0; b <= 9; b++) {
					for (c = 0; c <= 9; c++)
					{
						d = n - (a + b + c);
						if (d >= 0 && d <= 9) {
							printf("a = %d, b = %d,c = %d, d = %d \n", a, b, c, d);
							count++;
						}
					}
				}
			}
			printf("%d\n", count);
			break;
		}
		else 
		{
			printf("????????°????????\????????????????????????\n");
		}
	}
}

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

using namespace std;

int main()
{
	int n;
	double  ans;

	cin >> n;

	if(n > 36){ans = 0;}
	else{ans = pow(4, 36 - n);}

	printf("%.0f\n", ans);

	return 0;
}