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: import sys
import itertools

def countcombi(n):
    r = 0
    p = list(itertools.product(range(0,10),repeat = 4))
    for tmp in p:
        if sum(tmp) == n:
            r += 1
    return r


if __name__ == '__main__':
    for line in sys.stdin:
        n = (int)(line)
        print(countcombi(n))

Python: while True:
	try:
		n = int(input())
	except EOFError:
		break
	if n>36:
		print(0)
		continue
	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: while True:
  counter = 0
  try:
    n = int(input())
  except EOFError:
    break
  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)

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

Python: while True:
    try:
        count = 0
        n = int(input())
        for a in range(10):
            for b in range(10):
                for c in range(10):
                    d = n - a - b - c
                    if (d >= 0 and d <= 9):
                        count += 1
        print(count)
    except EOFError:
        break

Python: try:
    while True:
        n=int(input())
        cnt=0
        for a,b,c,d in [(a,b,c,d) 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)
except EOFError:
    pass

Python: import sys
  
def ans(num):
    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 == num:
                        ans += 1
  
    return ans
  
  
def main():
    a = []
  
    for line in sys.stdin:
        a.append(int(line))
  
    for line in a:
        print(ans(line))
  
if __name__ == "__main__":
    main()

Python: while True:
    try:
        r = int(input())

        count = 0

        for x in range(10):
            for y in range(10):
                for z in range(10):
                    for w in range(10):
                        if x + y + z + w == r:
                            count += 1
        print(count)
        
    except EOFError:
        break

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+k+j+l==n:
                    cnt+=1
print(cnt)

Python: import sys
c = [0 for i in range(37)]
for i in range(10):
    for j in range(10):
        for k in range(10):
            for l in range(10):
                c[i+j+k+l] += 1
for line in sys.stdin:
    print(c[int(line)])

Python: n=int(input())
a,b,c,d=0,0,0,0
ans=0
for i in range(10):
    c=0
    for j in range(10):
        b=0
        for f in range(10):
            a=0
            for e in range(10):
                if a+b+c+d==n:
                    ans+=1
                a+=1
            b+=1
        c+=1
    d+=1
print(ans)

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

Python: r = range
while True:
    try:
        n = int(input())
        ans = []
        ans = [(a,b,c,d) for a in r(10) for b in r(10) for c in r(10) for d in r(10) if a+b+c+d==n and (a,b,c,d) not in ans]
        print(len(ans))
    except:
        break

Python: while True:
    try:n=int(input())
    except:break
    ans=0
    for i in range(10):
        for j in range(10):
           for f in range(10):
                for e in range(10):
                    if i+j+f+e==n:
                        ans+=1

    print(ans)

Python: import sys
from collections import defaultdict
from itertools import product

d = defaultdict(int)
for x in product(range(10), repeat=4):
    d[sum(x)] += 1

for s in sys.stdin:
    print(d[int(s)])

Python: for line in sys.stdin:
    ans = 0
    n = int(line)
    for a in range(10):
        for b in range(10):
            for c in range(10):
                if 0 <= n-a-b-c <= 9:
                    ans += 1
    print(ans)

Python: ans=[]

while True:

	try:

		k=int(input())

		ct=0

		for i in range(10000):

			tmp=str(i)

			while len(tmp)<4:

				tmp="0"+tmp

			tmp_2=0

			for j in tmp:

				tmp_2+=int(j)

			if tmp_2==k:

				ct+=1

		ans.append(ct)

	except:

		break

for i in range(len(ans)):

	if i==len(ans)-1:

		print(ans[i],)

	else:

		print(ans[i])

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
    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: ans = []
for line in sys.stdin:
    answ = 0
    try:
        n = int(line)
    except:
        break
    for a in range(10):
        for b in range(10):
            for c in range(10):
                if 0 <= n-a-b-c <= 9:
                    answ += 1
    ans.append(answ)
print(*ans,sep="\n")

Python: while True:
  try:
    sum = 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 == sum:
              result+=1
    print(result)
  except EOFError:
    break

Python: import sys
for input in sys.stdin:
    count = 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 == int(input):
                        count += 1
    print(count)

Python: s = int(input())
results=set()
for a in range(10):
    for b in range(10):
        for c in range(10):
            d = s-a-b-c
            if d<0:break
            if d<=9: results.add((a,b,c,d))
print(len(results))

Python: import sys
c = [0 for i in range(37)]
for i in range(10):
    for j in range(10):
        for k in range(10):
            for l in range(10):
                t = i + j + k + l
                c[t] += 1
for line in sys.stdin:
    print(c[int(line)])

Python: import sys

answer = [0] * 51
for a in range(10):
  for b in range(10):
    for c in range(10):
      for d in range(10):
        answer[a + b + c + d] += 1

for line in sys.stdin:
  try:
    print(answer[int(line)])
  except:
    break

Python: cnt = 0
def get_input():
    while True:
        try:
            yield ''.join(input())
        except EOFError:
            break

if __name__ == '__main__':
    array = list(get_input())
    for i in range(len(array)):
        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 == int(array[i]):
                            cnt += 1
        print(cnt)
        cnt = 0