A. 2Char
time limit per test
2 seconds
memory limit per test
256 megabytes
input
standard input
output
standard output
Andrew often reads articles in his favorite magazine 2Char. The main feature of these articles is that each of them uses at most two distinct letters. Andrew decided to send an article to the magazine, but as he hasn’t written any article, he just decided to take a random one from magazine 26Char. However, before sending it to the magazine 2Char, he needs to adapt the text to the format of the journal. To do so, he removes some words from the chosen article, in such a way that the remaining text can be written using no more than two distinct letters.
C. GCD Table
time limit per test
2 seconds
memory limit per test
256 megabytes
input
standard input
output
standard output
The GCD table G of size n × n for an array of positive integers a of length n is defined by formula
D. Three Logos
time limit per test
1 second
memory limit per test
256 megabytes
input
standard input
output
standard output
Three companies decided to order a billboard with pictures of their logos. A billboard is a big square board. A logo of each company is a rectangle of a non-zero area.
A. Multiplication Table
time limit per test
1 second
memory limit per test
256 megabytes
input
standard input
output
standard output
Let’s consider a table consisting of n rows and n columns. The cell located at the intersection of i-th row and j-th column contains number i × j. The rows and columns are numbered starting from 1.