Program to print Z in Python
Code:
n=int(input('inter size of Z:' ))
for i in range(n):
for j in range(n):
if(i==0 or i==n-1 or i+j==n-1):
print('*', end=" ")
else:
print(' ',end=" ")
print('')
Output:
Hacker earth Binary subsequence "01" and "10" Problem Solution:
Problem Statement: Given four number x, y, a and b check if there exists a binary string having x 0's and y 1's such that the total number of subsequence equal to the sequence "01" in it is a and the total number of subsequence equal to the sequence "10" in it is b. Given: A binary string is a string made of the character '0' and '1' only. A sequence a is a subsequence of a sequence b if a can be obtained from b by deletion of several element. Input Format The first line contains a single integer T (1<=T<=10^5), denoting the number of test cases. Each of the next T lines contains four integers x, y, a and b (1<=x, y<=10^5, 0<=a, b<=10^9) Sample input: ...
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