2026.03.18 수

오늘 푼 문제

가희와3단고음_16162

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.util.StringTokenizer;

public class 가희와3단고음_16162 {
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
        StringTokenizer st = new StringTokenizer(br.readLine());

        int n = Integer.parseInt(st.nextToken());
        int a = Integer.parseInt(st.nextToken());
        int d = Integer.parseInt(st.nextToken());
        int cnt = 0;
        st = new StringTokenizer(br.readLine());

        for (int i = 0; i < n; i++) {
            int num = Integer.parseInt(st.nextToken());

            if (num == a) {
                cnt++;
                a += d;
            }
        }

        bw.write(cnt + "");
        bw.flush();
        bw.close();
    }
}

처음에 투포인터..? 했다가 보니까 굳이 연속될 필요는 없길래 그냥 그리디로 찾아보니 풀렸다.. 너무 허망했던 문제