algorithms
코드포스 (codeforces)
코드포스 4C (codeforces 4C)
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코드포스 4C (codeforces 4C) 문제 풀이 및 코드 (description and code)
Problem - 4C - Codeforces
코드
import java.io.*;
import java.util.HashMap;
public class CF4C {
static int n;
static String in;
static HashMap<String, Integer> hm = new HashMap<>();
public static void main(String[] args) throws IOException {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
n = Integer.parseInt(br.readLine());
StringBuffer sb = new StringBuffer();
for (int i = 0; i < n; i++) {
in = br.readLine();
if (hm.containsKey(in)) {
sb.append(in + hm.get(in) + "\n");
hm.put(in, hm.get(in) + 1);
}else {
hm.put(in, 1);sb.append("OK\n");
}
}
bw.write(sb.toString());
bw.flush();bw.close();
}
}