题目描述One day, Ahmed_Hossam went to Hemose and said "Let's solve a gym contest!". Hemose didn't want to do that, as he was playing Valorant, so he came up with a problem and told it to Ahmed to distr...
题目描述There is a chessboard of size $n$ by $n$ . The square in the $i$ -th row from top and $j$ -th column from the left is labelled $(i,j)$ .Currently, Gregor has some pawns in the $n$ -th row. Ther...