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: answermap=[0]*51
answermap[0] = 1
answermap[1] = 4
answermap[2] = 10
answermap[3] = 20
answermap[4] = 35
answermap[5] = 56
answermap[6] = 84
answermap[7] = 120
answermap[8] = 165
answermap[9] = 220
answermap[10] = 282
answermap[11] = 348
answermap[12] = 415
answermap[13] = 480
answermap[14] = 540
answermap[15] = 592
answermap[16] = 633
answermap[17] = 660
answermap[18] = 670
answermap[19] = 660
answermap[20] = 633
answermap[21] = 592
answermap[22] = 540
answermap[23] = 480
answermap[24] = 415
answermap[25] = 348
answermap[26] = 282
answermap[27] = 220
answermap[28] = 165
answermap[29] = 120
answermap[30] = 84
answermap[31] = 56
answermap[32] = 35
answermap[33] = 20
answermap[34] = 10
answermap[35] = 4
answermap[36] = 1
answermap[37] = 0
answermap[38] = 0
answermap[39] = 0
answermap[40] = 0
answermap[41] = 0
answermap[42] = 0
answermap[43] = 0
answermap[44] = 0
answermap[45] = 0
answermap[46] = 0
answermap[47] = 0
answermap[48] = 0
answermap[49] = 0
answermap[50] = 0

inputs = []

while True:
  try:
    inputs.append(int(input()))
  except EOFError:
    break

for i in inputs:
  print(answermap[i])

Python: while True:
    try:
        cnt =0
        a = int(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 == a:
                            cnt += 1
        print(cnt)
    except:
        break

Python: againstN = [0]*50

for a in range(0,10):
  for b in range(0,10):
    for c in range(0,10):
      for d in range(0,10):
        againstN[a+b+c+d] += 1

inputs=[]
while True:
  try:
    inputs.append(int(input()))
  except EOFError:
    break

for i in inputs:
  print(againstN[i])

Python: import itertools
def combination(n):
 m=0
 for i in itertools.product(range(10),repeat=4):
  (a,b,c,d)=i
  if a+b+c+d==n:
   m+=1
 return m

while True:
 try:
  n=int(input())
  print(combination(n))
 except EOFError:
  break

Python: while 1:
    try:
        count=0
        x=int(input())
        for i in reversed(range(10)):
            if 0<=x-i<=27:
                for j in reversed(range(10)):
                    if 0<=x-i-j<=18:
                        for z in reversed(range(10)):
                            if 0<=x-i-j-z<=9:
                                for y in reversed(range(10)):
                                    if x-i-j-z-y==0:
                                        count+=1
        print(count)
    except EOFError:
        break

Python: n = int(input().rstrip())
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 = cnt + 1

print(str(cnt))

Python: import sys
for e in sys.stdin:
 e=int(e);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==e]))

Python: import sys
import math

def case(a,b):
	return math.factorial(a+b)/(math.factorial(a)*math.factorial(b))

while True:
	try:
		if n >= 37:
			print('0')
		elif n >= 10 and n <= 36:
			print(case(n,4)-case(n-10,3))
		else:
			print(case(n,4))		
	except EOFError:
		break

Python: anss=[]
while True:
    try:
        ans=0
        goal=int(input())
        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==goal:
                            ans+=1
        anss.append(ans)
    except:
        break
for ans in anss:
    print(ans)

Python: while 1:
    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(cnt)

Python: while True:
    try:
        n = int(input())
    except:
        break
    ans = 0
    for a in range(10):
        for b in range(10):
            for c in range(10):
                d = n - (a + b + c)
                ans += 0 <= d <= 9
    print(ans)

Python: while True:
	try:
		n = int(input())
	except EOFError:
		break
	ret=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:
						ret+=1
	print(ret)

Python: import itertools
def combination(n):
 m=0
 for i in itertools.product(range(10),repeat=4):
  (a,b,c,d)=i
  if a+b+c+d==n:
   m+=1
 return m

while True:
 try:
  n=int(input())
  combination(n)
 except EOFError:
  break

Python: 
memo=[[0]*51 for i in range(5)]
def rec(i,n):
    if memo[i][n]!=0:
        return memo[i][n]
    if i==4:
        return 1 if n==0 else 0
    for m in range(10):
        memo[i][n]+=rec(i+1,n-m)
    return memo[i][n]
    
while True:
    try:
        n=int(input())
        print(rec(0,n))
    except:
        break

Python: import sys

for line in sys.stdin:
    n = int(line)
    count = 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 == n:
                        count += 1
    print(count)

Python: def count(num):    
    l1=[]
    for a in range (10):
        for b in range(10):
            for c in range (10):
                for d in range (10):
                    l1.append([a,b,c,d])
    l1=list(filter(lambda x: sum(x)==num,l1))
    return(len(l1))
while 1==1:
    print(count(int(input())))

Python: import itertools
try:
    while(True):
        n = int(input())
        cnt = 0
        rng = range(10)
        for i,j,k,l in itertools.product(rng,rng,rng,rng):
            if i + j + k + l == n:
                cnt = cnt + 1
        print(cnt)
except:
    pass

Python: import fileinput
for n in fileinput.input():
    n = int(n)
    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 += 1
    print(cnt)

Python: import sys
from itertools import product

sum = [0] * 51
for i,j,k,l in product(range(10),repeat=4):
    sum[i+j+k+l] +=1

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

Python: import sys
import math

def nCr(n, k):
    if 0 <= k <= n:
        nk,kk = 1,1
        for t in range(1, min(k, n - k) + 1):
            nk = nk*n
            kk = kk*t
            n -= 1
        return nk // kk
    else:
        return 0

p = [0] * 51
v = 0
for i in range(19):
    t = nCr(i+3, i)
    v = v + 4 * nCr(i-8,i-10)
    p[i] = t - v
    p[36-i] = p[i]

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

Python: import sys
for l in sys.stdin:
    n = int(l)
    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 += 1
    print(cnt)

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: #! /usr/bin/python3

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