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 itertools

try:
    while True:
        n = int(input())
        
        count = 0
        for a, b, c, d in itertools.product(range(10), repeat=4):
            if a + b + c + d == n:
                count += 1

        print(count)

except Exception as _:
    pass

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

Python: while True:
    try:
        #(a,b,c,d)=map(int,raw_input().split())
        n=input()
        cnt=0
        for a in xrange(10):
            for b in xrange(10):
                for c in xrange(10):
                    for d in xrange(10):
                        if a+b+c+d==n:
                            cnt+=1
        print(cnt)
    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+j+k+l == n:
                    cnt += 1
                    print(i,j,k,l)
print(cnt)

Python: #!/usr/bin/env python
# -*- coding: utf-8 -*-
# 


def kai(num):
	x = 0
	for i in range(10000):
		
		mk = str(i).zfill(4)
		if int(mk[0])+int(mk[1])+int(mk[2])+int(mk[3]) == num:
				x += 1
	return x

def main(): 
	while True:
		try:
			num = int(input())
		except:
			return
		else:
			print(kai(num))	
if __name__ == '__main__':
	main()

Python: t = 0
while t == 0:	
	p = 0
	try:
		n = int(input())
	except:
		break
	else:
		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):
							p += 1
	print(p)

Python: while True:
  try:
    n = int(input())
    results = []
    for i in range(10):
      for j in range(10):
        for k in range(10):
          for l in range(10):
            results.append( n == sum([i, j, k, l]) )
    print(len(list(filter(lambda x:x==True, results))))
  except:
    break

Python: # AOJ 0008 Sum of 4 Integers
# Python3 2018.6.9 bal4u

ans = [0 for i in range(51)]
for i in range(10):
	for j in range(10):
		for k in range(10):
			for l in range(10):
				ans[i+j+k+l] += 1
#for i in range(50+1):
#	print(i, ans[i])
	
while True:
    try:
        print(ans[int(input())])
    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+j+k+l == n:
                    cnt += 1
                    print(i,j,k,l)
print(cnt)

Python: import sys

for line in sys.stdin:
	count = 0
	n = int(line)
	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)

Python: from __future__ import (division, absolute_import, print_function,
                        unicode_literals)
from sys import stdin
for line in stdin:
    n = int(line)
    cnt = 0
    for a in xrange(10):
        if n < a:
            break
        for ab in xrange(a, a + 10):
            if n < ab:
                break
            for abc in xrange(ab, ab + 10):
                if n < abc:
                    break
                for abcd in xrange(abc, abc + 10):
                    if n == abcd:
                        cnt += 1
                        break
                    if n < abcd:
                        break
    print(cnt)

Python: import itertools
while True:
	try: n=int(input())
	except EOFError: break
	ans=0
	for (i,j,k) in itertools.product(range(10),range(10),range(10)):
		ans+=(0<=n-(i+j+k)<=9)
	print(ans)

Python: import sys
import itertools

for n in sys.stdin.readlines():
    n = int(n)
    patterns = itertools.product(range(10), range(10), range(10), range(10))
    ans = 0
    for a, b, c, d in patterns:
       if a + b + c + d == n:
           ans +=1
    print(ans)

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

Python: import sys

lines = sys.stdin.readlines()
for line in lines:
    a = int(line)
    sets = 0
    for i in range(0, 10):
        for k in range(0, 10):
            for l in range(0, 10):
                for m in range(0, 10):
                    if(i+k+l+m == a):
                        sets += 1
    print(sets)

Python: from itertools import product

while True:
    try:
        n = int(input)
    except:
        break
    count = sum(a + b + c + d == n for a, b, c, d in product(range(10), repeat=4))
    print(count)

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

Python: import sys


def rec(j,s):
    if s > n:
        return 0
    if s == n:
        return 1
    if j == 0:
        return 0
    v = 0
    for i in range(10):
        v += rec(j-1, s + i)
    return v

n = sys.stdin.readline()
while n:
    n = int(n)
    print(rec(4,0))
    n = sys.stdin.readline()

Python: lst=[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):
                lst[a+b+c+d] += 1
while 1:
    try:
        print(lst[int(input())])
    except:
        break

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

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

Python: def sumint(n,num):
    if num==2:
        if n>18: return 0
        else:
            c=0
            for i in range(10):
                if 0<=n-i<10:c+=1
            return c
    ret=0
    for i in range(10):
        ret=ret+sumint(n-i,num-1)
    return ret
while True:
    try:n=int(input())
    except:break
    if n>36:print(0)
    else:
        print(sumint(n,4))