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
}

Python: n=int(input())
cnt=0
for i in range(10):
    for j in range(10):
        for k in range(10):
            for l in range(10):
                if i+j+k+l==n:
                    cnt=cnt+1
                    print(i,j,k,l)

print(cnt)

Python: num = [0 for i in range(51)]
for a in range(10):
    for b in range(10):
        for c in range(10):
            for d in range(10):
                num[a+b+c+d] += 1
while 1:
    try:
        print(num[int(input())])
    except:
        break

Python: while True:
  try:
    n = int(input())
    ans =0
    for a in range(10):
      for b in range(10):
        for c in range(10):
          for d in range(10):
            if a+b+c+d==n:
              ans=ans+1
    print(ans)
  except:
    break

Python: while(True):
    try:
        ans = 0
        n = input()
        for i in range(10):
            for j in range(10):
                for k in range(10):
                    for l in range(10):
                        if(i + j + k + l == n):
                            ans += 1
        print(ans)
    except Exception:
        break

Python: import sys

for num in sys.stdin:
    num = int(num)
    counter = 0
    for i in range(0,10):
        for j in range(0,10):
            for k in range(0,10):
                for l in range(0,10):
                    if (i+j+k+l) == num:
                        counter += 1
    print(counter)

Python: x=[0]*51
for a in range(10):
	for b in range(10):
		for c in range(10):
			for d in range(10):
				x[a+b+c+d]+=1
while True:
	try:
		print(x[int(input())])
	except:
		break

Python: # -*- coding: utf-8 -*-
while True:
    try:
        n = int(raw_input())
        case = 0
        for a in range(10):
            for b in range(10):
                for c in range(10):
                    for d in range(10):
                        if a + b + c + d == n:
                            case += 1
        print(case)
    except EOFError:
        break

Python: def calc(n, x):
    # n個の数(0~9)の和でxが作れるかどうかを判別する
    if n == 1:
        if x <= 9:
            return 1
        else:
            return 0
    else:
        num = 0
        for i in range(10):
            if x-i < 0:
                continue
            num += calc(n-1, x-i)
        return num


while True:
    try:
        print(calc(4, int(input())))
    except:
        exit(0)

Python: import sys
a=[0]*51;x=range(10)
for i in range(51):
 a[i]=sum([1 for a in x for b in x for c in x for d in x if a+b+c+d==i])
for e in sys.stdin:
 print(a[int(e)])

Python: import sys
values = []
for line in sys.stdin:
    values.append(int(line))
ans = [1 for i in range(10) for j in range(10) for k in range(10) for l in range(10) if n == i + j + k + l]
print(ans.count(1))

Python: from collections import deque
import sys

def solve(n, target):
    """ 0-9?????§?????°???n???????¶?????????¨??§???target??????????????????????????? """
    if n <= 1:
        if 0 <= target <=9:
            Q.append(target)
            return target
        else:
            return None
    else:
        for i in range(10):
            res = solve(n - 1, target - i)


Q = deque()
if __name__ == '__main__':
    # ??????????????\???
    for line in sys.stdin:
        target = int(line)

        result = solve(4, target)
        print(len(Q))
        Q.clear()

Python: import sys
from itertools import product
s = [sum(l) for l in product(range(10), repeat = 4)]

ns = sys.stdin.readlines()
for n in ns:
    print(s.count(int(n)))

Python: while True:
    try:
        n = int(input())
    except EOFError:
        break
    answer = 0
    for a in range(10):
        for b in range(10):
            for c in range(10):
                for d in range(10):
                    if a+b+c+d == n:
                        answer += 1
    print(answer)

Python: #!/usr/bin/env python
# -*- conding: utf-8 -*-
import itertools
import sys
import math

for line in sys.stdin.readlines():
    n = int(line.strip())
    if n > 36:
        print(0)
        continue
    elif n == 36:
        print(1)
        continue
    cnt = 0
    for a in range(10):
        for b in range(10):
            for c in range(10):
                d = n - (a + b + c)
                if 0 <= d and d <= 9:
                    cnt += 1
    print(cnt)

Python: if __name__ == '__main__':
    while True:
        try:
            n = int(input())
            counter = 0
            for a in range(10):
                for b in range(10):
                    for c in range(10):
                        for d in range(10):
                            if a + b + c + d == n:
                                counter += 1
            print(counter)
        except EOFError:
            break

Python: for _ in range(50):
    try:
        n = int(input()) # 1 <= n <= 50
        ans =set()
        for a in range(10):
            if (n - a) >= 1:
                for b in range(10):
                    if(n - a -b) >= 1:
                        for c in range(10):
                            if(n - a - b - c) >= 1:
                                for d in range(10):
                                    if(n - a - b - c - d) == 0:
                                        ans.add("{},{},{},{}".format(a,b,c,d))
                                        ans.add("{},{},{},{}".format(b,c,d,a))
                                        ans.add("{},{},{},{}".format(c,d,a,b))
                                        ans.add("{},{},{},{}".format(d,a,b,c))
        print(len(ans))
    except EOFError:
        break

Python: while True :
    try :
        n = int(input())
    except EOFError :
        break
    
    cnt = 0
    for a in range(10) :
        for b in range(10) :
            for c in range(10) :
                for d in range(10) :
                    if a + b + c + d == n :
                        cnt += 1
    print(cnt)

Python: import sys
a=[0]*51
for i in range(19):a[i]=a[36-i]=(i+3)*-~-~i*-~i//6-a[i-10]*4*(i>9)
for e in sys.stdin:print(a[int(e)])

Python: import sys
values = []
for line in sys.stdin:
    values.append(int(line))
    
for v in values:
    ans = [1 for i in range(10) for j in range(10) for k in range(10) for l in range(10) if v == i + j + k + l]
    print(ans.count(1))

Python: import sys

for line in sys.stdin:
    n = int(line)
    num = 0
    for a in range(0, 10):
        for b in range(0, 10):
            for c in range(0, 10):
                for d in range(0, 10):
                    if a+b+c+d == n:
                        num += 1

    print(num)

Python: import sys
for line in sys.stdin:
    n = int(line)
    cnt = 0
    for a in range(10):
        for b in range(10):
            for c in range(10):
                for d in range(10):
                    if a + b + c + d == n:
                        cnt += 1;
    print(cnt)

Python: import sys
for e in sys.stdin:
 x=range(10)
 print(sum([1 for a in x for b in x for c in x for d in x if a+b+c+d==int(e)]))

Python: while True:
    try:
        s=int(input())
        result=0
        for i in range(10):
            for j in range(10):
                for k in range(10):
                    for l in range(10):
                        if i+j+k+l==s:
                            result+=1
        print(result)   
    except EOFError:
        break

Python: import sys

p = [0] * 51
for i in range(10):
    p[i] = p[36-i] = (i+3)*(i+2)*(i+1)//6

for i in range(10,19):
    p[i] = p[36-i] = (i+1)*(i+2)*(i+3)//6 - 2*(i-9)*(i-8)*(i-7)//3

for i in sys.stdin:
    print(p[int(i)])