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Ecology.java
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Ecology.java
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import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.Collections;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;
public class Ecology {
public static void main(String[] args) throws IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
StringBuilder sb = new StringBuilder();
Map<String, Integer> map = new HashMap<>();
int count = 1;
String value = br.readLine();
while(value != null && !value.isEmpty()) {
count++;
map.put(value, map.getOrDefault(value, 0) + 1);
value = br.readLine();
}
count--;
List<String> lst = new LinkedList<>(map.keySet());
Collections.sort(lst);
for(String s : lst) {
sb.append(s).append(" ").append(String.format("%.4f", ((double)map.get(s) / (double)count) * 100)).append("\n");
}
bw.write(sb + "\n");
bw.flush();
bw.close();
br.close();
}
}