Iron, Magnet and Wall Codechef November Long challenge 2020 solution with code explanation - Iron, Magnet and Wall Codechef November Long challenge 2020 solution with code explanation Let's read problem statement, Chef loves to play with iron (Fe) and magnets (Ma). He took a row of N N cells (numbered 1 1 through N N ) and placed some objects in some of these cells. You are given a string S S with length N N describing them; for each valid i i , the i i -th character of S S is one of the following: 'I' if the i i -th cell contains a piece of iron 'M' if the i i -th cell contains a magnet '_' if the i i -th cell is empty ':' if the i i -th cell contains a conducting sheet 'X' if the i i -th cell is blocked If there is a magnet in a cell i i and iron in a cell j j , the attraction power between these cells is P i , j = K + 1 − | j − i | − S i , j P i , j = K + 1 − | j − i | − S i , j , where S i , j S i , j is the
