Codeforces Round 157 (Div. 2)

2 problems from Codeforces Round 157 (Div. 2) (contest 259), difficulty 1000-1100. 2/2 solutions verified against sample I/O.

2 items

Codeforces Round 157 (Div. 2)

Div. 2 | 2 problems | 2/2 verified | Difficulty 1000-1100 | 4m 51s

#	Problem	Rating	Tags	Accepted	Time	✓
A	Little Elephant and Chess	1000	brute-force, strings	10,033	2m 35s	✓
B	Little Elephant and Magic Square	1100	brute-force, implementation	14,695	2m 16s	✓

Practice › Codeforces Solutions › Codeforces Round 157 (Div. 2) ›

CF 259A - Little Elephant and Chess

We are given an 8×8 board where each cell is either white (W) or black (B). The goal is to determine whether this board can be transformed into a standard chessboard. A standard chessboard has alternating colors both horizontally and vertically.

Practice › Codeforces Solutions › Codeforces Round 157 (Div. 2) ›

CF 259B - Little Elephant and Magic Square

We are given a 3×3 magic square where the three cells on the main diagonal have been erased. The missing cells are (0,0), (1,1), and (2,2), and appear as zeroes in the input. Every other value is known. A magic square has a single common sum S.