Problem Solving/Baekjoon
[백준] 11116 교통량 - Brute Force / Java
graycode
2024. 9. 2. 15:36
• 문제 링크
https://www.acmicpc.net/problem/11116
• 풀이 코드
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.util.HashSet;
import java.util.Set;
public class Main {
public static void main(String[] args) throws IOException {
BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(System.out));
StringBuilder sb = new StringBuilder();
Set<Integer> l = new HashSet<>(), r = new HashSet<>();
int n = read();
while (n-- > 0) {
int m = read(), cnt = 0;
for (int i = 0; i < m; i++) l.add(read());
while (m-- > 0) {
int i = read();
if (l.contains(i - 1500) && l.contains(i - 1000) && r.contains(i - 500)) cnt++;
r.add(i);
}
sb.append(cnt).append("\n");
l.clear();
r.clear();
}
bw.write(sb.toString());
bw.flush();
}
private static int read() throws IOException {
int c, n = System.in.read() & 15;
while ((c = System.in.read()) > 32) n = (n << 3) + (n << 1) + (c & 15);
return n;
}
}