diff --git a/ps008.py b/ps008.py
new file mode 100644
index 0000000..1f28fac
--- /dev/null
+++ b/ps008.py
@@ -0,0 +1,28 @@
+# -*- coding: utf-8 -*-
+"""
+Created on Sat Oct  5 00:05:26 2019
+
+@author: tanma
+"""
+
+import sys
+
+def get_prod(x, k):
+    n = list(str(x))
+    l = [int(i) for i in n]
+    prods = []
+    for i in range(len(l)-k):
+        a = 1
+        for j in range(i,i+k):
+            a *= l[j]
+        prods.append(a)
+
+    return max(prods) 
+
+
+t = int(input().strip())
+for a0 in range(t):
+    n,k = input().strip().split(' ')
+    n,k = [int(n),int(k)]
+    num = input().strip()
+    print(get_prod(num, k))
\ No newline at end of file
diff --git a/ps017.py b/ps017.py
new file mode 100644
index 0000000..1e9bcac
--- /dev/null
+++ b/ps017.py
@@ -0,0 +1,75 @@
+# -*- coding: utf-8 -*-
+"""
+Created on Sat Oct  5 12:20:28 2019
+
+@author: tanma
+"""
+
+numbersDict = { 
+0:"Zero",
+1:"One",
+2:"Two",
+3:"Three",
+4:"Four",
+5:"Five",
+6:"Six",
+7:"Seven",
+8:"Eight",
+9:"Nine",
+10:"Ten",
+11:"Eleven",
+12:"Twelve",
+13:"Thirteen",
+14:"Fourteen",
+15:"Fifteen",
+16:"Sixteen",
+17:"Seventeen",
+18:"Eighteen",
+19:"Nineteen",
+20:"Twenty",
+30:"Thirty",
+40:"Forty",
+50:"Fifty",
+60:"Sixty",
+70:"Seventy",
+80:"Eighty",
+90:"Ninety"
+}
+
+def numberLetters(num):
+
+    letters = ""
+
+    if 0 < num <= 20:
+        letters += numbersDict[num]
+
+    if 21 <= num <= 99:
+        a,b = divmod(num, 10)
+        if b == 0:
+            letters += numbersDict[a*10]
+        else:
+            letters += numbersDict[a*10] + " " + numbersDict[b]
+
+    if 100 <= num <= 999:
+        if num % 100 == 0:
+            letters += numbersDict[int(num / 100)] + "Hundred"
+        else:
+            digit = int(num / 100)
+            num = num - digit * 100
+            if 0 < num <= 20:
+                letters += numbersDict[digit] + "Hundred " + numbersDict[num]
+            if 21 <= num <= 99:
+                a,b = divmod(num, 10)
+                if b == 0:
+                    letters += numbersDict[digit] + "Hundred " + numbersDict[a*10]
+                else:
+                    letters += numbersDict[digit] + "Hundred " + numbersDict[a*10] + numbersDict[b]
+    if num == 1000:
+        letters += "One Thousand"
+
+    return letters
+
+t = int(input().strip())
+for a0 in range(t):
+    print(numberLetters(int(input())))
+
diff --git a/ps018.py b/ps018.py
new file mode 100644
index 0000000..12a9db0
--- /dev/null
+++ b/ps018.py
@@ -0,0 +1,25 @@
+# -*- coding: utf-8 -*-
+"""
+Created on Sat Oct  5 11:42:15 2019
+
+@author: tanma
+"""
+
+def recSumAtRow(rowData, rowNum):
+    for i in range(len(rowData[rowNum])):
+        rowData[rowNum][i] += max([rowData[rowNum+1][i],rowData[rowNum+1][i+1]])
+    if len(rowData[rowNum])==1: 
+        return rowData[rowNum][0]
+    else: 
+        return recSumAtRow(rowData, rowNum-1)
+
+
+t = int(input().strip())
+for a0 in range(t):
+    n = input().strip()
+    n = int(n)
+    row = []
+    for i in range(n):
+        a = [int(i) for i in input().split(" ")]
+        row.append(a)
+    print(recSumAtRow(row, len(row)-2))
\ No newline at end of file
diff --git a/ps019.py b/ps019.py
new file mode 100644
index 0000000..0c51d04
--- /dev/null
+++ b/ps019.py
@@ -0,0 +1,27 @@
+# -*- coding: utf-8 -*-
+"""
+Created on Sat Oct  5 12:07:03 2019
+
+@author: tanma
+"""
+
+import time,calendar
+
+calendar.setfirstweekday(6)
+
+def sundays(year):
+    counter = 0
+    for month in range(1,13):
+        cal = calendar.monthcalendar(year,month)
+        if cal[0][0]:
+            counter += 1
+    return counter
+
+t = int(input().strip())
+for a0 in range(t):
+    n = [int(i) for i in input().split(" ")]
+    ne = [int(i) for i in input().split(" ")]
+    total = 0
+    for i in range(n[0],ne[0]):
+        total += sundays(i)
+    print(total)
\ No newline at end of file