Modified

Author: Rezwan

.DS_Store

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+import functools
+import sys
+input = lambda: sys.stdin.readline()
+
+
+@functools.lru_cache(maxsize=10000)
+def Main():
+    N, A, B = map(int, input().split())
+    Arr = list(map(int, input().split()))
+    sm = 0
+    for i in range(0, len(Arr) - 1):
+        zemi = abs(Arr[i] - Arr[i + 1])
+        # print(zemi)
+        sm += min((zemi * A), B)
+
+    print(sm)
+
+
+if __name__ == '__main__':
+    Main()

AtCoder/.DS_Store

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+N, Q = map(int, input("").split())
+mylist = list(map(int, input("").split()))
+lmin = min(mylist)
+lmax = max(mylist)
+for i in range(0,Q):
+        q = int(input(""))
+        if (lmin > q) or (lmax  < q) :
+                print ("No")
+        else:
+                print ("Yes")

AtCoder/D - Walk and Teleport.py

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+def Main():
+    n, k = map(int, input().split())
+    sm = 0
+    arr = list(map(int, input().split()))
+    sm = sum(arr)
+    N = n
+    cnt = 0
+    while (sm + N // 2) // N < k:
+        sm += k
+        N += 1
+        cnt += 1
+    print(cnt)
+
+
+if __name__ == '__main__':
+    Main()

CodeChef/Devu and an Array.py

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+'''
+Created on May 16, 2016
+
+@author: Md. Rezwanul Haque
+'''
+s = input()
+tar = input()
+score = 0
+for i in range(len(s)):
+    if s[i:i + len(tar)] == tar:
+        score+=1
+print(score)

Codeforces/A. Straight «A».py

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+'''
+Created on May 15, 2016
+
+@author: Md. Rezwanul Haque
+'''
+s  = input()
+s  = s.split(" ")
+print("-".join(s))

HackerRank/Find a string.py

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+########################## List(Array) ##########################
+
+# empty list
+my_list = []
+
+# list of integers
+my_list = [1, 2, 3, 4, 5]
+
+# list with mixed datatypes
+my_list = [1, "Hello", 3.4, 2, 'World']
+
+# nested list
+my_list = ["mouse", [8, 4, 6], ['a'], ['x', 'y', 'z']]
+
+
+# Index if list
+my_list = ['H', 'L', 'L', 'O']
+print(my_list[0])
+# Output : H
+print(my_list[3])
+# Output: O
+print(my_list[-1])
+# Output: O
+print(my_list[-0])
+# Output: H
+print(my_list[-4])
+# Output: H
+
+
+# Nested List
+n_list = ["Happy", [2,0,1,5]]
+
+# Nested indexing
+
+print(n_list[0][1])
+# Output: a
+
+print(n_list[1][3])
+# Output: 5
+
+num_list = [1, 2, 3, 4, 5 , 6, 7, 8, 9]
+print(num_list[0:3])
+# Output : [1, 2, 3]
+print(num_list[2:])
+# Output : [3, 4, 5, 6, 7, 8, 9]
+print(num_list[:3])
+# Output: [1, 2, 3]
+print(num_list[:-1])
+# Output: [1, 2, 3, 4, 5, 6, 7, 8]
+
+# Inverse the list
+print(num_list[::-1])
+# Output : [9, 8, 7, 6, 5, 4, 3, 2, 1]
+print(*reversed(num_list)) # 9 8 7 6 5 4 3 2 1
+
+############ How to store value into the list
+my_list = [] # declare the empty list
+n = int(input('Enter the size of list : '))
+for i in range(n):
+    a = int(input())
+    my_list.append(a)
+
+print(my_list)
+''' Input and Output: 
+Enter the size of list : 5
+1
+2
+3
+4
+5
+[1, 2, 3, 4, 5]
+'''
+#You can store value this way:
+my_list = list(map(int, input().split())) # after new line value store will be ended
+print(my_list)
+'''
+Input: 
+7 8 9 6 5 4
+
+Output: 
+[7, 8, 9, 6, 5, 4]
+'''
+
+
+my_list = [5, 3, 4 , 1, 2]
+# sort the list
+my_list.sort()
+print(my_list) #  [1, 2, 3, 4, 5]
+
+my_list = [3, 4, 2, 5, 1]
+my_list.remove(4)
+print(my_list) # [3, 2, 5, 1]
+
+
+##Insert an element at specific index in a list and return updated list
+a = [1, 2, 4]
+a.insert(2, 3) # insert 3 in index 2
+b = a[:]
+print(b) # [1, 2, 3, 4]
+
+### or
+a = [1, 2, 4]
+b = a[:2] + [3] + a[2:]
+print(b) # [1, 2, 3, 4]
+
+''' This note has taken from this side : https://www.programiz.com/python-programming/list
+
+append() - Add an element to the end of the list
+extend() - Add all elements of a list to the another list
+insert() - Insert an item at the defined index
+remove() - Removes an item from the list
+pop() - Removes and returns an element at the given index
+clear() - Removes all items from the list
+index() - Returns the index of the first matched item
+count() - Returns the count of number of items passed as an argument
+sort() - Sort items in a list in ascending order
+reverse() - Reverse the order of items in the list
+copy() - Returns a shallow copy of the list
+
+'''
+
+list_arr = [1, 7, 4, 5, 9, 6]
+list_arr.extend([33, 777])
+print(list_arr)
+
+
+list_arr = [1, 7, 4, 5, 9, 6]
+list_arr.pop()
+print(list_arr) # [1, 7, 4, 5, 9]
+list_arr.pop(1)
+print(list_arr) # [1, 4, 5, 9]
+
+list_arr = [1, 7, 4, 5, 9, 6]
+list_arr.clear()
+print(list_arr) # []
+
+
+list_arr = [1, 7, 4, 5, 9, 6]
+idx = list_arr.index(9)
+print(idx) # 4
+
+
+list_arr = [1,1,1,2,3,2,5]
+print(list_arr.count(1)) # 3
+
+
+list_arr = [1, 7, 4, 5, 9, 6]
+copy_list_arr = list_arr.copy()
+print(copy_list_arr) # [1, 7, 4, 5, 9, 6]
+
+
+## Find largest number from the list
+list_arr = [1,3,4,8,9,77]
+largest = max(list_arr)
+print(largest) # 77
+
+
+## Find small number from the list
+list_arr = [1,3,4,8,9,77]
+small = min(list_arr)
+print(small) # 1
+
+
+# delete entire list
+#del my_list
+
+# NameError: name 'my_list' is not defined
+#print(my_list)
+
+
+########################### String ###############################
+'''
+H   e   l   l   o
+0   1   2   3   4
+-5  -4  -3  -2  -1
+
+'''
+
+# all of the following are equivalent
+my_string = 'Hello'
+print(my_string)
+
+my_string = "Hello"
+print(my_string)
+
+my_string = '''Hello'''
+print(my_string)
+
+# triple quotes string can extend multiple lines
+my_string = """Hello, welcome to
+           the world of Python"""
+print(my_string)
+
+'''
+### Output : 
+Hello
+Hello
+Hello
+Hello, welcome to
+           the world of Python
+'''
+
+
+my_string = "Hello"
+print(my_string[0]) # H
+
+my_string = "Hello "
+my_string1 = "World!"
+string = my_string + my_string1
+print(string) # Hello World!
+
+
+my_string = "I Love You"
+if 'I' in my_string:
+    print("Ok") # Ok
+else:
+    print("Not Ok!")
+
+my_string = "I Love You"
+if 'Love' in my_string:
+    print("Ok")  # Ok
+else:
+    print("Not Ok!")
+
+
+# Length of a string
+my_string = "Rezwan"
+print(len(my_string)) # 6
+
+
+print('{0}, {1}, {2}'.format("Rezwanul", "Haque", "Rezwan")) # Rezwanul, Haque, Rezwan
+
+print('{}, {}, {}'.format("Rezwanul", "Haque", "Rezwan")) # Rezwanul, Haque, Rezwan
+
+my_string = "I Love You"
+STr = my_string.replace("Love","Hate")
+print(STr) # I Hate You
+
+### Does Python have a string 'contains' substring method? (https://stackoverflow.com/questions/3437059/does-python-have-a-string-contains-substring-method)
+s = "This be a string"
+if s.find("is") == -1:
+    print( "No 'is' here!")
+else:
+    print("Found 'is' in the string.") # Found 'is' in the string.
+
+
+'''Important Link:
+(1) Is there a way to substring a string in Python? [ https://stackoverflow.com/questions/663171/is-there-a-way-to-substring-a-string-in-python ]
+(2) Generator Expressions vs. List Comprehension [ https://stackoverflow.com/questions/47789/generator-expressions-vs-list-comprehension ]
+
+'''
+
+
+'''
+** You are now able to solve following online-judge problems.
+------------------------------------------------------------
+(1) CodeForces | A. Straight «A»
+(2) Timus | 1000. A+B Problem
+(3) URI | 1026 - To Carry or not to Carry 
+(4) HackerRank | String Split and Join
+(5) Spoj | ADDREV - Adding Reversed Numbers
+(6) CodeChef | Devu and an Array 
+(7) HackerRank | Find a string
+(8) UVa | 11799 - Horror Dash
+(9) UVa | 10370 - Above Average
+(10) AtCoder | D - Walk and Teleport
+'''

HackerRank/String Split and Join.py

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+# your code goes here
+
+'''
+Created on May 20, 2016
+
+@author: Md. Rezwanul Haque
+'''
+n = int(input())
+ans = 0
+rezwan = 0
+for i in range(n):
+    a, b = map(int, input().split())
+    A = int(str(a)[::-1])  # reverse
+    B = int(str(b)[::-1])  # reverse
+    ans = A + B
+    rezwan = int(str(ans)[::-1])  # reverse
+    print(rezwan) 

List(Array) and String.py

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+a, b = map(int, input().split())
+print(a + b)