Snakify Python Program Solution Condition If and If else

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Python - Programming Language Snakify.org - Problem Solution Input, Print and Number. 1) Minimum of two numbers. 2) Sign function. 3) Minimum of three

Tutor Chetan

Python - Programming Language

Snakify.org - Problem Solution

Input, Print and Number

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1) Minimum of two numbers

Statement: Given two integers, print the smaller value.

Model solution

a = int(input())
b = int(input())
if a < b:
print(a)
else:
print(b)

2) Sign function

Statement: For the given integer X print 1 if it's positive, -1 if it's negative, or 0 if it's equal to zero.

Try to use the cascade if-elif-else for it.

Model solution

x = int(input())
if x > 0:
print(1)
elif x == 0:
print(0)
else:
print(-1)

3) Minimum of three numbers

Statement: Given three integers, print the smallest value.

Model solution

a = int(input())
b = int(input())
c = int(input())
if b >= a <= c:
print(a)
elif a >= b <= c:
print(b)
else:
print(c)

OR

# num1 = int(input("Input: "))
# num2 = int(input("Input: "))
# num3 = int(input("Input: "))
# if num1 < num2 and num1 < num3:
# print(num1)
# elif num2 <num1 and num2 < num3:
# print(num2)
# else:
# print(num3)

4) Equal numbers

Statement: Given three integers, determine how many of them are equal to each other. The program must print one of these numbers: 3 (if all are the same), 2 (if two of them are equal to each other and the third is different) or 0 (if all numbers are different).

Model solution

a = int(input())
b = int(input())
c = int(input())
if a == b == c:
print(3)
elif a == b or b == c or a == c:
print(2)
else:
print(0)

OR

#num1 = int(input("Input: "))
# num2 = int(input("Input: "))
# num3 = int(input("Input: "))
# if num1 == num2 and num1 == num3:
# print("3")
# elif num1 != num2 and num1 != num3 and num2 != num3:
# print("0")
# else:
# print("2")

5) Rook move

Statement: Chess rook moves horizontally or vertically. Given two different cells of the chessboard, determine whether a rook can go from the first cell to the second in one move.

The program receives the input of four numbers from 1 to 8, each specifying the column and row number, first two - for the first cell, and then the last two - for the second cell. The program should output YES if a rook can go from the first cell to the second in one move, or NO otherwise.

r1 = int(input("Input: "))
c1 = int(input("Input: "))
r2 = int(input("Input: "))
c2 = int(input("Input: "))
if r1 == r2 or c1 == c2:
print("YES")
else:
print("NO")

6) Chess Board - Same color

Statement: Given two cells of a chessboard. If they are painted in one color, print the word YES, and if in a different color - NO.

The program receives the input of four numbers from 1 to 8, each specifying the column and row number, first two - for the first cell, and then the last two - for the second cell.

Model solution

x1 = int(input())
y1 = int(input())
x2 = int(input())
y2 = int(input())
if (x1 + y1 + x2 + y2) % 2 == 0:
print('YES')
else:
print('NO')

7) Leap year

Statement: Given the year number. You need to check if this year is a leap year. If it is, print LEAP, otherwise print COMMON.

The rules in Gregorian calendar are as follows:

a year is a leap year if its number is exactly divisible by 4 and is not exactly divisible by 100
a year is always a leap year if its number is exactly divisible by 400

Warning. The words LEAP and COMMON should be printed all caps.