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: lst=[0 for i in range(50)]
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: import sys
t = [0 for i in range(10000)]
c = 0
for i in range(10):
    for j in range(10):
        for k in range(10):
            for l in range(10):
                t[c] = i + j + k + l
                c += 1
for line in sys.stdin:
    n = int(line)
    print(t.count(n))

Python: while True:
    try:
        cnt = 0
        n = 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 == n:
                            cnt = cnt + 1

        print(str(cnt))
    except:
        break

Python: import sys

def count_combination(n):
    count = 0
    for i in range(10):
        for j in range(10):
            for k in range(10):
                l = n - (i + j + k)
                if l >= 0 and l < 10:
                    count += 1
    return count

for line in sys.stdin:
    n = int(line)
    print(count_combination(n))

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

Python: #coding:utf-8

while True:
    try:
        count = 0
        n = input()

        for a in xrange(0, 10):
            for b in xrange(0, 10):
                for c in xrange(0, 10):
                    for d in xrange(0, 10):
                        if a + b + c + d == n:
                            count += 1
        print(count)
    except:
        break

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: n=int(input())
ans=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:
					ans+=1
print(ans)

Python: n=int(input())
count=0
for a in range(1,10):
    for b in range(1,10):
        for c in range(1,10):
            if 50-a-b-c>=0 and 50-a-b-c<10:
                count+=1
print(count)

Python: a = []
while True:
    try:
        a.append(int(input()))
    except EOFError:
        break
for i in a:
    frag = 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 == i:
                        frag += 1
    print(frag)

Python: while True:
    try:
        n = int(input())
    except:
        exit()
    m = 9
    c = 0
    def loop(n,dep):
        l = n - m*(3-dep)
        u = n
        if (l < 0):l = 0
        if (m < u):u = 9
        return l,u+1

    il,iu= loop(n,0)
    for i in range(il,iu):
        jl,ju = loop(n-i,1)
        for j in range(jl,ju):
            ij = i+j
            kl,ku = loop(n-ij,2)
            for k in range(kl,ku):
                c += 1

    print(c)

Python: import sys
for line in sys.stdin:
    n=int(line)
    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: import sys

for user in sys.stdin:
    n = int(user)
    num = 0
    for a in range(10):
        for b in range(10):
            for c in range(10):
                for d in range(10):
                    if(n == a + b + c + d):
                        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
def count(number) :
    result = 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 == 35 : result += 1
    return result

for make in sys.stdin.readlines():
    print(count(make))

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(1)
        continue
    if n > 36:
        print(0)
        continue
    cnt = 0
    cmbs = itertools.combinations_with_replacement(range(0,10), 4)
    for cmb in cmbs:
        if sum(cmb) == n:
            if len(set(cmb)) == 1:
                cnt += 1
            elif len(set(cmb)) == 2:
                cnt += math.factorial(2) * 2
            elif len(set(cmb)) == 3:
                cnt += math.factorial(3)
            elif len(set(cmb)) == 4:
                cnt += math.factorial(4)
    print(cnt)

Python: def rec(i,n):
    r=0
    if i==4:
        return 1 if n==0 else 0
    for m in range(10):
        r+=rec(i+1,n-m)
    return r
while True:
    try:
        n=int(input())
        print(rec(0,n))
    except:
        break

Python: #!/usr/bin/env python3
import itertools
import sys


def operation(n):
    count = 0
    for a, b, c, d in itertools.product(range(10), repeat=4):
        if a + b + c + d == n:
            count += 1
    print(count)


def main():
    for l in sys.stdin:
        n = int(l.strip())
        operation(n)


if __name__ == '__main__':
    main()

Python: INF=-1
memo=[[INF]*51 for i in range(5)]
def rec(i,n):
    if memo[i][n]!=INF:
        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
dataset = sys.stdin.readlines()
for n in dataset:
	n = int(n)
	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)

Python: import sys
a=[0]*51
for i in range(19):a[i]=a[36-i]=(i+3)*(i+2)*(i+1)//6-[0,a[i-10]*4][i>9]
for e in sys.stdin:print(a[int(e)])

Python: import sys
try:
    while True:
        n = int(input())
        
        res = 0
        
        for i in range(10):
            for j in range(10):
                for k in range(10):
                    for m in range(10):
                        if i + j + k + m == n:
                            res += 1
        
        print(res)
except Exception:
    sys.exit()

Python: import sys
a=[0]*51
for i in range(10):a[i]=a[36-i]=(i+3)*(i+2)*(i+1)//6
for i in range(10,19):a[i]=a[36-i]=(i+3)*(i+2)*(i+1)//6-a[i-10]*4
for e in map(int,sys.stdin):print(a[e])

Python: import sys
  
n = [0]*51
for i in range(10):
    for j in range(10):
        for k in range(10):
            for l in range(10):
                n[i+j+k+l] += 1

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

Python: import itertools, sys

d = {i: 0 for i in range(51)}
for i in itertools.combinations_with_replacement(range(0,10), 4):
    d[sum(i)] += 1
print(d)
for i in map(int, sys.stdin):
    print(d[i]*4)