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June 23, 2021 22:21
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import java.io.*; | |
import java.math.*; | |
import java.security.*; | |
import java.text.*; | |
import java.util.*; | |
import java.util.concurrent.*; | |
import java.util.function.*; | |
import java.util.regex.*; | |
import java.util.stream.*; | |
import static java.util.stream.Collectors.joining; | |
import static java.util.stream.Collectors.toList; | |
class Result { | |
/* | |
* Complete the 'repeatedString' function below. | |
* | |
* The function is expected to return a LONG_INTEGER. | |
* The function accepts following parameters: | |
* 1. STRING s | |
* 2. LONG_INTEGER n | |
*/ | |
public static long repeatedString(String s, long n) { | |
if (s.equals("a")) return n; | |
// number of `a` in one small string | |
long counter = 0; | |
for (int i = 0; i < s.length(); i++) { | |
if (s.charAt(i) == 'a') { | |
counter++; | |
} | |
} | |
long numberOfPieces = n / s.length(); | |
counter = counter * (numberOfPieces); | |
final String substring = s.substring(0, (int) (n % s.length())); | |
for (int i = 0; i < substring.length(); i++) { | |
if (substring.charAt(i) == 'a') { | |
counter++; | |
} | |
} | |
return counter; | |
} | |
} | |
public class Solution { | |
public static void main(String[] args) throws IOException { | |
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in)); | |
BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(System.getenv("OUTPUT_PATH"))); | |
String s = bufferedReader.readLine(); | |
long n = Long.parseLong(bufferedReader.readLine().trim()); | |
long result = Result.repeatedString(s, n); | |
bufferedWriter.write(String.valueOf(result)); | |
bufferedWriter.newLine(); | |
bufferedReader.close(); | |
bufferedWriter.close(); | |
} | |
} |
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