Math Problems

In this problem you will be given two integers a, b. You have to answer if GCD(a, b) + LCM(a, b) = a...

• Math, NumberTheory
• Moderate
• 194/304 Solutions
• 1100 Submissions

One Day Mr. Professor was taking His schedule class on Discrete Mathematics. In this lecture, He was...

• By RasedulRussell
• Combinatorics
• Moderate
• 19/32 Solutions
• 106 Submissions

Given the sum of four numbers and three of those numbers, find the missing number. All four numbers ...

• Math
• Moderate
• 3178/3270 Solutions
• 4740 Submissions
• uDebug

Talent Bob is a galaxy wide known legend and a racer (in game :P). He always wins races by his trick...

• By ssohan
• Adhoc, Math
• Moderate
• 2/17 Solutions
• 70 Submissions

Given the radius of a circle, calculate and print its area. The area of a circle can be computed usi...

• Geometry, Math
• Moderate
• 2264/2447 Solutions
• 4789 Submissions
• uDebug

Given the length of a side of a square, calculate and print its area.

• Math
• Moderate
• 3611/3693 Solutions
• 5314 Submissions
• uDebug

In this problem, you will have to print the n-th prime number. The first few prime numbers are given...

• Implementation, NumberTheory
• Moderate
• 444/669 Solutions
• 2030 Submissions

Given some numbers, can you tell, if the product of these numbers are a perfect square or not? A num...

• NumberTheory
• Moderate
• 134/354 Solutions
• 1337 Submissions

In the Gregorian calendar, certain years have 366 days instead of 365. In such years, the month of F...

• Math
• Moderate
• 921/1129 Solutions
• 3110 Submissions
• uDebug

Given N numbers, read each one, calculate the running average and print it. For example, given the t...

• Math
• Moderate
• 1335/1472 Solutions
• 2665 Submissions
• uDebug

Nafis Shahriar loves to do codeforces programming contests. He is the first candidate master in code...

• By iamSadee
• BinarySearch, NumberTheory
• Moderate
• 4/20 Solutions
• 39 Submissions

Read an integer variable and print all of its divisors (including 1 and the number itself).

• Math
• Moderate
• 1663/1690 Solutions
• 2285 Submissions
• uDebug

Given an improper fraction (as the numerator N and the denominator D), determine and print it in mix...

• Math
• Moderate
• 2328/2375 Solutions
• 3253 Submissions
• uDebug

Given an integer N, print the N-th Fibonacci number. A Fibonacci series is a series of numbers in wh...

• Math
• Moderate
• 1164/1205 Solutions
• 1742 Submissions
• uDebug

Sometimes, contestants tend to look for patterns in problem descriptions. They try to figure out the...

• By TarifEzaz
• Math
• Moderate
• 481/661 Solutions
• 1745 Submissions
• uDebug

Your friend has M watermelons. He doesn’t want to share them with anyone, but let’s imagine he would...

• Math
• Moderate
• 1996/2018 Solutions
• 2559 Submissions
• uDebug

Byang is going to join a new school. His new class has N students. Each of the students are identifi...

• Math
• Moderate
• 1363/1422 Solutions
• 2024 Submissions
• uDebug

Koanhali is a strange country. The govt. of Koanhali maintain the marriages of this country. If you ...

• By Riaz_BSMRSTU
• DataStructure, Implementation, Math
• Moderate
• 83/116 Solutions
• 310 Submissions

A positive integer number n is called a prime number, if it is only divisible by 1 and n itself, whe...

• Math, NumberTheory
• Moderate
• 207/248 Solutions
• 671 Submissions
• uDebug

Sadia is one of the nicest persons you will ever meet. In fact, she is one of those persons who like...

• By emoncse
• Math
• Moderate
• 852/909 Solutions
• 1552 Submissions
• uDebug