{"problem":{"name":"Welcome to AtCoder","description":{"content":"Takahashi participated in a contest on AtCoder. The contest had $N$ problems. Takahashi made $M$ submissions during the contest. The $i$\\-th submission was made for the $p_i$\\-th problem and received ","description_type":"Markdown"},"platform":"AtCoder","limit":{"time_limit":2000,"memory_limit":262144},"difficulty":"None","is_remote":true,"is_sync":true,"sync_url":null,"sign":"abc151_c"},"statements":[{"statement_type":"Markdown","content":"Takahashi participated in a contest on AtCoder.\nThe contest had $N$ problems.\nTakahashi made $M$ submissions during the contest.\nThe $i$\\-th submission was made for the $p_i$\\-th problem and received the verdict $S_i$ (`AC` or `WA`).\nThe number of Takahashi's correct answers is the number of problems on which he received an `AC` once or more.\nThe number of Takahashi's penalties is the sum of the following count for the problems on which he received an `AC` once or more: the number of `WA`s received before receiving an `AC` for the first time on that problem.\nFind the numbers of Takahashi's correct answers and penalties.\n\n## Constraints\n\n*   $N$, $M$, and $p_i$ are integers.\n*   $1 \\leq N \\leq 10^5$\n*   $0 \\leq M \\leq 10^5$\n*   $1 \\leq p_i \\leq N$\n*   $S_i$ is `AC` or `WA`.\n\n## Input\n\nInput is given from Standard Input in the following format:\n\n$N$ $M$\n$p_1$ $S_1$\n$:$\n$p_M$ $S_M$\n\n[samples]","is_translate":false,"language":"English"}],"meta":{"iden":"abc151_c","tags":[],"sample_group":[["2 5\n1 WA\n1 AC\n2 WA\n2 AC\n2 WA","2 2\n\nIn his second submission, he received an `AC` on the first problem for the first time. Before this, he received one `WA` on this problem.\nIn his fourth submission, he received an `AC` on the second problem for the first time. Before this, he received one `WA` on this problem.\nThus, he has two correct answers and two penalties."],["100000 3\n7777 AC\n7777 AC\n7777 AC","1 0\n\nNote that it is pointless to get an `AC` more than once on the same problem."],["6 0","0 0"]],"created_at":"2026-03-03 11:01:14"}}