Triangle Type
Programming Basics · Python
TASK
Problem
Given sides of a valid triangle, print `EQUILATERAL`, `ISOSCELES`, or `SCALENE`.
EXAMPLE
Example
5 5 8
ISOSCELES
LIMITS
Constraints
a, b, c > 0; triangle is valid
LEARN
Theory for this problem
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`input()` reads data entered by the user. The result of `input()` is initially a string. `split()` separates one input line into individual values using spaces. `map()` applies the specified conversion to each input value. Comparison operators `==`, `!=`, `<`, `>`, `<=`, `>=` compare values and produce `True` or `False`. `or` requires at least one condition to be true. `if` checks a condition and runs its block when the condition is true. `else` runs when the corresponding `if` condition is false. `print()` displays the program result. Print only what the problem statement requires.
**Connection to this task.** An `if` statement chooses a program branch from a Boolean condition. Comparisons produce `True` or `False`, and `elif` lets you test several mutually exclusive cases in order. The expression `'EQUILATERAL'` shows how this idea is applied to the task data.
NEED HELP?
Hints
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['Check all three equal first.']
ANSWER
Solution
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a, b, c = map(int, input().split())
if a == b == c:
print('EQUILATERAL')
elif a == b or a == c or b == c:
print('ISOSCELES')
else:
print('SCALENE')