{"problem":{"name":"Determinant","description":{"content":"Given is a $2 \\times 2$ matrix $A = \\begin{bmatrix} a & b \\\\ c & d \\end{bmatrix}$.   The determinant of $A$ can be found as $ad-bc$.   Find it.","description_type":"Markdown"},"platform":"AtCoder","limit":{"time_limit":2000,"memory_limit":262144},"difficulty":"None","is_remote":true,"is_sync":true,"sync_url":null,"sign":"abc184_a"},"statements":[{"statement_type":"Markdown","content":"Given is a $2 \\times 2$ matrix $A = \\begin{bmatrix} a & b \\\\ c & d \\end{bmatrix}$.  \nThe determinant of $A$ can be found as $ad-bc$.  \nFind it.\n\n## Constraints\n\n*   All values in input are integers.\n*   $-100 \\le a, b, c, d \\le 100$\n\n## Input\n\nInput is given from Standard Input in the following format:\n\n$a$ $b$\n$c$ $d$\n\n[samples]","is_translate":false,"language":"English"}],"meta":{"iden":"abc184_a","tags":[],"sample_group":[["1 2\n3 4","\\-2\n\nThe determinant of $\\begin{bmatrix} 1 & 2 \\\\ 3 & 4 \\end{bmatrix}$ is $1 \\times 4 - 2 \\times 3 = -2$."],["0 -1\n1 0","1"],["100 100\n100 100","0"]],"created_at":"2026-03-03 11:01:14"}}