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>
#include<cstdio>
using namespace std;
int main()
{
	int n;
	while(scanf("%d",&n)!=EOF)
	{
		if(n>36) cout<<0<<endl;
		else
		{
			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++)
			if(i+j+k+l==n) ans++;
			cout<<ans<<endl;
		}
	}
}

C++: #include <stdio.h>

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

	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",ans);
	}
	return 0;
}

C++: #include <algorithm>

#include <stdio.h>
#include <string.h>

int n;

int memo[4 + 1][50 + 1];

int search(int i, int j)
{
  if (memo[i][j] >= 0)
    return memo[i][j];

  if (j > i * 9)
    return memo[i][j] = 0;

  if (i == 1)
    return memo[i][j] = 1;

  int c = 0;

  for (int k = 0; k <= j && k <= 9; k ++)
    c += search(i - 1, j - k);

  return memo[i][j] = c;
}

int main(int argc, char** argv)
{
  while (fscanf(stdin, "%d", &n) == 1) {
    memset(memo, -1, sizeof(memo));
    
    fprintf(stdout, "%d\n", search(4, n));
  }
}

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

int main() {
  int n, ans;
  while (cin >> n) {
    ans = 0;
    for (int i=0;i<10000;i++) {
      int a = i%10, b = i%100/10, c = i%1000/100, d = i%10000/1000;
      if (a + b + c + d == n) {
        // cout << " " << a << ", " << b << ", " << c << ", " << d << endl;
        ans++;
      }
    }
    cout << ans << endl;
  }
  return 0;
}

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

int main() {
	int N, X[19] = {}, XX[37] = {};
	for (int i = 0; i <= 9; i++) {
		for (int j = 0; j <= 9; j++) {
			X[i + j]++;
		}
	}
	for (int i = 0; i <= 18; i++) {
		for (int j = 0; j <= 18; j++) {
			XX[i + j] += X[i] * X[j];
		}
	}
	while (cin >> N) {
		if (N > 36) cout << 0 << endl;
		else cout << XX[N] << endl;
	}
}

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

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

C++: #include <iostream>

int main()
{
	int n;
	while( std::cin >> n )
	{
		int num = 0;
		for( int i1=0; i1<=9; ++i1 )
		{
			for( int i2=0; i2<=9; ++i2 )
			{
				for( int i3=0; i3<=9; ++i3 )
				{
					for( int i4=0; i4<=9; ++i4 )
					{
						num += (i1+i2+i3+i4 == n);
					}
				}
			}
		}

		std::cout << num;
	}
}

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<cstdio>
int main(){
    int n;
    while(~scanf("%d",&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++){
                        if(i+j+k+l==n) ans++;
                    }
                }
            }
        }
        printf("%d\n",ans);
    }
}

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

int DP[10][100];
int N;

int main()
{
	while(scanf("%d",&N)!=EOF)
	{
		memset(DP,0,sizeof(DP));
		DP[0][0]=1;
		for(int i= 0;i<=4;i++)
		{
			for(int j=0;j<=N;j++)
			{
				for(int k=0;k<10;k++)
				{
					DP[i+1][j+k]+=DP[i][j];
				}
			}
		}
		printf("%d\n",DP[4][N]);
	}

}

C++: #include <stdio.h>

int main(void)
{
  int n,i;

  i = 0;
  while(i < 50){
    int ans = 0;
    scanf("%d", &n);
    if( n == -1){
      break;
    }
    if(n <= 36){
      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++;
	      }
	    }
	  }
	}
      }
    }
    printf("%d\n", ans);
    i++;
  }
  return 0;
}

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

int main(){
 int n;
 int ans = 0;
 while(true){
 n = null;
 scanf("%d\n",&n);
 if(n == null) 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 a, b, c, d, n, e ;
	while (cin>>n) {
		e = 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)e++;
					}
				}
			}
		}
		cout << e << endl;
	}
	return 0;
}

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

C++: #include<iostream>
using namespace std;int main(){for(int i,c,k,n,j;cin>>n;k=0){i=0;i<1e4;i++,c=0){for(j=i;j>0;j/=10)c+=j%10;if(c==n)k++;}cout<<k<<endl;}}

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

C++: #include<cstdio>

int solve(int a,int b){
	if(a==0){
		if(0<=b&&b<=9)return 1;
		else return 0;
	}
	int res=0;
	for(int i=0;i<10;i++){
		res+=solve(a-1,b-i);
	}
	return res;
}

int main(){
	int a;
	while(~scanf("%d",&a);)	printf("%d\n",solve(3,a));
	return 0;
}

C++: #include <iostream>

using namespace std;

int main()
{
	int n;
	while ( cin >> n ) {
		int count;
		if (n>36) count = 0;
		else {
			if (n>18) n = 36 - n;
			count = ((n+1)*(n+2)*(n+3))/6;
		}
		cout << count << endl;
	}
	
	return 0;
}

C++: #include<iostream>
int main(){
	int n;
	int a, b, c, d;
	int count;
	std::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++;
							break;
						}
					}
				}
			}
		}		
	std::cout << count<<std::endl;
	return 0;
}

C++: #include <iostream>
 
using namespace std;
 
int main(){
    int L=0,N,A,B,C,D;
    while(cin>>N){L=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){L++;};
                };};};};
 
    cout<<L<<endl;};
    cin>>L;
        return 0;
 
}