Score : $300$ points
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 the verdict $S_i$ (AC
or WA
).
The number of Takahashi's correct answers is the number of problems on which he received an AC
once or more.
The 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.
Find the numbers of Takahashi's correct answers and penalties.
AC
or WA
.Input is given from Standard Input in the following format:
$N$ $M$ $p_1$ $S_1$ $:$ $p_M$ $S_M$
Print the number of Takahashi's correct answers and the number of Takahashi's penalties.
2 5 1 WA 1 AC 2 WA 2 AC 2 WA
2 2
In his second submission, he received an AC
on the first problem for the first time. Before this, he received one WA
on this problem.
In his fourth submission, he received an AC
on the second problem for the first time. Before this, he received one WA
on this problem.
Thus, he has two correct answers and two penalties.
100000 3 7777 AC 7777 AC 7777 AC
1 0
Note that it is pointless to get an AC
more than once on the same problem.
6 0
0 0