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Author: KirilMadzharov

4. For Loop/1. Lab/01. Numbers from 1 to 100.py

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+"""
+Write a program that prints the numbers 1 to 100, each on a new line.
+"""
+
+for i in range(1, 100 + 1):
+    print(i)

4. For Loop/1. Lab/02. Numbers 1 to N with Step 3.py

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+"""
+Write a program that reads a number n
+entered by the user and prints the numbers 1 through n through 3.
+"""
+
+n = int(input())
+
+for i in range(1, n + 1, 3):
+    print(i)

4. For Loop/1. Lab/03. Even Powers of 2.py

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+"""
+Write a program that reads a number n entered by the user
+and prints the even powers of 2 ≤ 2n: 20, 22, 24, 26, …, 2n.
+"""
+
+n = int(input())
+
+for i in range(0, n + 1, 2):  # iterate with a step of 2 for even numbers
+    print(2**i)  # 2^0 = 1

4. For Loop/1. Lab/04. Numbers N 1.py

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+"""
+Write a program that reads a positive integer n entered by the user
+and prints the numbers n through 1 in reverse order.
+
+The number n entered will always be greater than 1.
+"""
+
+n = int(input())
+
+for i in range(n, 0, -1):
+    print(i)

4. For Loop/1. Lab/05. Character Sequence.py

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+"""
+Write a program that reads text (string)
+entered by the user and prints each character
+of the text on a separate line.
+"""
+
+text = input()
+
+for i in text:
+    print(i)

4. For Loop/1. Lab/06. Vowels Sum.py

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+"""
+To write a program that reads text (string) entered by the user
+and calculates and prints the sum of the vowel values according to the table below:
+
+letter a e i o u
+value 1 2 3 4 5
+"""
+
+text = input()
+result = 0
+
+for i in range(0, len(text)):
+    if text[i] == "a":
+        result += 1
+    if text[i] == "e":
+        result += 2
+    if text[i] == "i":
+        result += 3
+    if text[i] == "o":
+        result += 4
+    if text[i] == "u":
+        result += 5
+
+print(result)

4. For Loop/1. Lab/07. Sum Numbers.py

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+"""
+Write a program that reads n-th number of integers
+entered by the user and sums them.
+
+• The number of numbers n is entered from the first line of the input.
+• One whole number is entered from the next n lines.
+
+The program must read the numbers, add them, and print the sum.
+"""
+
+
+count_of_numbers = int(input())
+sum_of_numbers = 0
+
+for i in range(count_of_numbers):
+    current_number = int(input())
+    sum_of_numbers += current_number
+
+print(sum_of_numbers)
+

4. For Loop/1. Lab/08. Number sequence.py

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+"""
+Write a program that reads n number of integers.
+
+Print the largest and smallest number among those entered.
+"""
+
+
+import sys
+
+iterations = int(input())
+
+max_num = -sys.maxsize
+min_num = sys.maxsize
+number = 0
+
+for nums in range(iterations):
+    number = int(input())
+
+    if number > max_num:
+        max_num = number
+
+    if number < min_num:
+        min_num = number
+
+print(f"Max number: {max_num}")
+print(f"Min number: {min_num}")

4. For Loop/1. Lab/09. Left and Right Sum.py

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+"""
+Write a program that reads 2 * n-th number of integers
+supplied by the user and checks whether the sum of the first n numbers
+
+(left sum) is equal to the sum of the second n numbers (right sum).
+
+If there is a tie, print " Yes, sum = " + the sum;
+
+otherwise it prints " No, diff = " + the difference.
+
+The difference is calculated as a positive number (in absolute value).
+"""
+
+
+iterations = int(input())
+
+left_sum = 0
+right_sum = 0
+
+for numbers in range(iterations * 2):
+    current_num = int(input())
+    if numbers < iterations:
+        left_sum += current_num
+    else:
+        right_sum += current_num
+
+if left_sum == right_sum:
+    print(f"Yes, sum = {left_sum}")
+else:
+    diff = abs(left_sum - right_sum)
+    print(f"No, diff = {diff}")

4. For Loop/1. Lab/10. Odd Even Sum.py

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+"""
+Write a program that reads n-th number of integers
+supplied by the user and checks whether the sum of the numbers
+in even positions is equal to the sum of the numbers in odd positions.
+
+• If the sums are equal, print two lines: "Yes" and on a new line "Sum = " + the sum;
+• If the amounts are not equal, print two lines: "No" and on a new line "Diff = " + the difference.
+
+The difference is calculated in absolute value.
+"""
+
+
+
+n = int(input())
+
+odd_sum = 0
+even_sum = 0
+
+for position in range(1, n + 1):
+    current_num = int(input())
+    if position % 2 == 0:
+        even_sum += current_num
+    else:
+        odd_sum += current_num
+
+if even_sum == odd_sum:
+    print(f"Yes")
+    print(f"Sum = {even_sum}")
+else:
+    diff = abs(even_sum - odd_sum)
+    print(f"No")
+    print(f"Diff = {diff}")

4. For Loop/2. Exercise/01. Numbers Ending in 7.py

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+"""
+Write a program that prints the numbers in the range 1 to 1000 that end in 7.
+"""
+
+for i in range(1, 1001):
+    if i % 10 == 7:
+        print(i)

4. For Loop/2. Exercise/02. Half Sum Element.py

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+"""
+Write a program that reads n-th number of integers entered by the user and checks
+if there is a number among them that is equal to the sum of all the others.
+
+• If there is such an element, print "Yes" and on a new line "Sum = " + its value
+• If there is no such element, print "No" and on a new line "Diff = " + the difference
+between the largest element and the sum of the others (by absolute value)
+"""
+
+
+import sys
+
+iterations = int(input())
+
+max_num = -sys.maxsize
+sum_numbers = 0
+
+for number in range(iterations):
+    num = int(input())
+    sum_numbers += num
+    if num > max_num:
+        max_num = num
+
+sum_numbers -= max_num
+diff = abs(max_num - sum_numbers)
+
+if sum_numbers == max_num:
+    print(f"Yes")
+    print(f"Sum = {sum_numbers}")
+else:
+    print(f"No")
+    print(f"Diff = {diff}")

4. For Loop/2. Exercise/03. Histogram.py

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+"""
+Given n integers in the interval [1…1000]. Of these, some percentage p1 are below 200,
+another percentage p2 are from 200 to 399, another percentage p3 are from 400 to 599,
+another percentage p4 are from 600 to 799 and the remaining p5 percentage are from 800 and above.
+
+Write a program that calculates and prints the percentages p1, p2, p3, p4 and p5.
+Example: we have n = 20 numbers: 53, 7, 56, 180, 450, 920, 12, 7, 150, 250, 680, 2,
+600, 200, 800, 799, 199, 46, 128, 65.
+
+We get the following distribution and visualization:
+
+Range Numbers in range Number of numbers Percent
+< 200 53, 7, 56, 180, 12, 7, 150, 2, 199, 46, 128, 65 12 p1 = 12 / 20 * 100 = 60.00%
+200 … 399 250, 200 2 p2 = 2 / 20 * 100 = 10.00%
+400 … 599 450 1 p3 = 1 / 20 * 100 = 5.00%
+600 … 799 680, 600, 799 3 p4 = 3 / 20 * 100 = 15.00%
+≥ 800 920, 800 2 p5 = 2 / 20 * 100 = 10.00%
+"""
+
+
+n = int(input())
+
+p1 = 0
+p2 = 0
+p3 = 0
+p4 = 0
+p5 = 0
+
+for numbers in range(n):
+    num = int(input())
+
+    if num < 200:
+        p1 += 1
+    elif 200 <= num <= 399:
+        p2 += 1
+    elif 400 <= num <= 599:
+        p3 += 1
+    elif 600 <= num <= 799:
+        p4 += 1
+    elif num >= 800:
+        p5 += 1
+
+p1_percent = (p1 / n) * 100
+p2_percent = (p2 / n) * 100
+p3_percent = (p3 / n) * 100
+p4_percent = (p4 / n) * 100
+p5_percent = (p5 / n) * 100
+
+print(f"{p1_percent:.2f}%")
+print(f"{p2_percent:.2f}%")
+print(f"{p3_percent:.2f}%")
+print(f"{p4_percent:.2f}%")
+print(f"{p5_percent:.2f}%")
+

4. For Loop/2. Exercise/04. Clever Lily.py

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+"""
+Lily is now N years old. For every birthday she gets a present.
+• For odd birthdays (1, 3, 5...n) he gets toys.
+• For even birthdays (2, 4, 6...n) he receives money.
+
+For the second birthday, he receives BGN 10.00, and the amount increases
+by BGN 10.00 for each subsequent even birthday (2 -> 10, 4 -> 20, 6 -> 30...etc.).
+
+ Over the years, Lily has secretly saved the money. Lily's brother, in the years
+ that she receives money, takes BGN 1.00 from them. Lily sold the toys received
+ over the years, each for P leva and added the amount to the money saved.
+
+ With the money, she wanted to buy a washing machine for BGN X. Write a program
+ to calculate how much money she has collected and whether she has enough to buy a washing machine.
+"""
+
+
+lily_age = int(input())
+washing_machine = float(input())
+one_toy_price = int(input())
+
+birthday = 0
+brother_money = 0
+counter = 0
+toys = 0
+
+for age in range(lily_age):
+    counter += 1
+    if counter % 2 == 0:
+        birthday += (counter / 2) * 10
+        brother_money += 1
+    else:
+        toys += 1
+
+money_for_toys = one_toy_price * toys
+total_money = birthday - brother_money
+diff = abs((money_for_toys + total_money) - washing_machine)
+
+if money_for_toys + total_money >= washing_machine:
+    print(f"Yes! {diff:.2f}")
+else:
+    print(f"No! {diff:.2f}")
+

4. For Loop/2. Exercise/05. Salary.py

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+"""
+A company boss notices that more and more employees are spending time on distracting websites.
+To prevent this, it implements surprise checks on its employees' open browser tabs.
+
+According to the open site in taba, the following fines are imposed:
+• "Facebook" -> BGN 150
+• "Instagram" -> BGN 100
+• "Reddit" -> BGN 50
+
+Two lines are read from the console:
+• Number of open tabs in the browser n - an integer in the interval [1...10]
+• Salary - number in the interval [500...1500]
+Then n - number of times website name - text is read
+"""
+
+
+count_open_tabs = int(input())
+salary = int(input())
+
+for i in range(count_open_tabs):
+    website = input()
+    if website == "Facebook":
+        salary -= 150
+    elif website == "Instagram":
+        salary -= 100
+    elif website == "Reddit":
+        salary -= 50
+    if salary <= 0:
+        print("You have lost your salary.")
+        break
+
+if salary > 0:
+    print(f"{int(salary)}")
+

4. For Loop/2. Exercise/06. Oscars.py

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+"""
+You are invited by the academy to write software to calculate the points for an actor/actress.
+The academy will give you initial points for the actor.
+Each rater will then give their rating.
+
+he points the actor receives are formed by: the length of the evaluator's
+name multiplied by the points he gives divided by two.
+
+If the score at any point exceeds 1250.5 the program should abort and
+print that the given actor has received a nomination.
+
+"""
+
+
+
+actors_name = input()
+academy_points = float(input())
+n_graders = int(input())
+
+final_points = academy_points
+
+for i in range(n_graders):
+    grader_name = input()
+    grader_points = float(input())
+    final_points += (len(grader_name) * grader_points) / 2
+    if final_points > 1250.5:
+        print(f"Congratulations, {actors_name} got a nominee for leading role with {final_points:.1f}!")
+        break
+
+diff = 1250.5 - final_points
+
+if final_points <= 1250.5:
+    print(f"Sorry, {actors_name} you need {diff:.1f} more!")
+