Wrong Answer on Test 233 (Hard Version)
This is the harder version of the problem. In this version, $1 \le n \le 2\cdot10^5$. You can hack this problem if you locked it. […]
test 233
Wrong Answer on Test 233 (Easy Version)
This is the easier version of the problem. In this version $1 \le n \le 2000$. You can hack this problem only if you solve […]
