题目描述
You will be given a string S of length 3 representing the weather forecast for three days in the past.
The $i-th character (1 \leq i \leq 3)$ of S represents the forecast for the i-th day. S, C, and R stand for sunny, cloudy, and rainy, respectively.
You will also be given a string T of length 3 representing the actual weather on those three days.
The $i-th character (1 \leq i \leq 3)$ of S represents the actual weather on the i-th day. S, C, and R stand for sunny, cloudy, and rainy, respectively.
Print the number of days for which the forecast was correct.
-----Constraints-----
- S and T are strings of length 3 each.
- S and T consist of S, C, and R.
-----Input-----
Input is given from Standard Input in the following format:
S
T
-----Output-----
Print the number of days for which the forecast was correct.
-----Sample Input-----
CSS
CSR
-----Sample Output-----
2
- For the first day, it was forecast to be cloudy, and it was indeed cloudy.
- For the second day, it was forecast to be sunny, and it was indeed sunny.
- For the third day, it was forecast to be sunny, but it was rainy.
Thus, the forecast was correct for two days in this case.
输入格式
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输出格式
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