Snakify Python Program Solution Condition If and If else

 

Tutor Chetan

Python - Programming Language

Snakify.org - Problem Solution

Input, Print and Number

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. 

Model solution

• year = int(input())
• if (year % 4 == 0) and (year % 100 != 0) or (year % 400 == 0):
• print('LEAP')
• else:
• print('COMMON')