{"problem":{"name":"Extra Character","description":{"content":"You are given strings $S$ and $T$. $S$ consists of lowercase English letters, and $T$ is obtained by inserting a lowercase English letter into $S$. Find the position of the inserted character in $T$. ","description_type":"Markdown"},"platform":"AtCoder","limit":{"time_limit":2000,"memory_limit":262144},"difficulty":"None","is_remote":true,"is_sync":true,"sync_url":null,"sign":"abc280_c"},"statements":[{"statement_type":"Markdown","content":"You are given strings $S$ and $T$. $S$ consists of lowercase English letters, and $T$ is obtained by inserting a lowercase English letter into $S$.\nFind the position of the inserted character in $T$.  \nIf there are multiple candidates, find any of them.\n\n## Constraints\n\n*   $1 \\leq |S| \\leq 5\\times 10^5$\n*   $S$ consists of lowercase English letters.\n*   $T$ is obtained by inserting a lowercase English letter into $S$.\n\n## Input\n\nThe input is given from Standard Input in the following format:\n\n$S$\n$T$\n\n[samples]","is_translate":false,"language":"English"}],"meta":{"iden":"abc280_c","tags":[],"sample_group":[["atcoder\natcorder","5\n\nThe $5$\\-th character from the beginning of $T$, `r`, is inserted."],["million\nmilllion","5\n\nOne of the $3$\\-rd, $4$\\-th, and $5$\\-th characters from the beginning of $T$ is inserted. Thus, printing any one of $3$, $4$, and $5$ is accepted."],["vvwvw\nvvvwvw","3"]],"created_at":"2026-03-03 11:01:14"}}