{"raw_statement":[{"iden":"problem statement","content":"It has been decided that a programming contest sponsored by company A will be held, so we will post the notice on a bulletin board.\nThe bulletin board is in the form of a grid with $N$ rows and $N$ columns, and the notice will occupy a rectangular region with $H$ rows and $W$ columns.\nHow many ways are there to choose where to put the notice so that it completely covers exactly $HW$ squares?"},{"iden":"constraints","content":"*   $1 \\leq H, W \\leq N \\leq 100$\n*   All values in input are integers."},{"iden":"input","content":"Input is given from Standard Input in the following format:\n\n$N$\n$H$\n$W$"},{"iden":"sample input 1","content":"3\n2\n3"},{"iden":"sample output 1","content":"2\n\nThere are two ways to put the notice, as follows:\n\n###   ...\n###   ###\n...   ###\n\nHere, `#` represents a square covered by the notice, and `.` represents a square not covered."},{"iden":"sample input 2","content":"100\n1\n1"},{"iden":"sample output 2","content":"10000"},{"iden":"sample input 3","content":"5\n4\n2"},{"iden":"sample output 3","content":"8"}],"translated_statement":null,"sample_group":[],"show_order":["default"],"formal_statement":null,"simple_statement":null,"has_page_source":true}