Jin's Library

import java.io.BufferedReader;import java.io.InputStreamReader;import java.util.StringTokenizer;import java.util.Arrays;public class BOJ_1931 { public static void main(String[] args) throws Exception{ BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); int N = Integer.parseInt(br.readLine()); int s = 0, e = 0, cnt = 0, last = 0; int[][] meetin..

import java.io.BufferedReader;import java.io.InputStreamReader;import java.util.Stack;public class BOJ_4949 { public static void main(String[] args) throws Exception{ BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); StringBuilder sb = new StringBuilder(); String line; String result = "yes"; while ((line = br.readLine()) != null ) { ..

import java.io.BufferedReader;import java.io.InputStreamReader;import java.util.Stack;public class BOJ_10799 { public static void main(String[] args) throws Exception{ BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); char[] N = br.readLine().toCharArray(); Stack sk = new Stack(); char last = ' '; boolean flag = false; int iron..

import java.io.BufferedReader;import java.io.InputStreamReader;import java.util.StringTokenizer;public class BOJ_1043 { static int[] parent; static int find(int x){ if(parent[x] == x) return x; return parent[x] = find(parent[x]); } static void union(int a, int b){ a = find(a); b = find(b); if(a != b) parent[b] = a; } public static void mai..

import java.io.BufferedReader;import java.io.InputStreamReader;public class BOJ_10775 { static int[] parent; static int find(int x){ if(parent[x] == x) return x; return parent[x] = find(parent[x]); } static void union(int a, int b){ a = find(a); b = find(b); if(a != b) parent[b] = a; } public static void main(String[] args) throws Exce..