結果

問題 No.185 和風
ユーザー threepipes_sthreepipes_s
提出日時 2015-04-19 23:23:33
言語 Java19
(openjdk 21)
結果
AC  
実行時間 80 ms / 1,000 ms
コード長 2,709 bytes
コンパイル時間 2,413 ms
コンパイル使用メモリ 75,000 KB
実行使用メモリ 51,468 KB
最終ジャッジ日時 2023-09-18 01:16:01
合計ジャッジ時間 3,542 ms
ジャッジサーバーID
(参考情報)
judge15 / judge13
このコードへのチャレンジ(β)

テストケース

テストケース表示
入力 結果 実行時間
実行使用メモリ
testcase_00 AC 58 ms
49,572 KB
testcase_01 AC 80 ms
51,340 KB
testcase_02 AC 70 ms
51,260 KB
testcase_03 AC 73 ms
51,468 KB
testcase_04 AC 72 ms
51,396 KB
testcase_05 AC 50 ms
49,564 KB
testcase_06 AC 71 ms
51,344 KB
権限があれば一括ダウンロードができます

ソースコード

diff #

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.Comparator;
import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.Queue;
import java.util.Random;

public class Main {
	public static char[][] board;
	public static int[][][][] dp;
	public static void main(String[] args) throws NumberFormatException,
	IOException {
		ContestScanner in = new ContestScanner();
		int n = in.nextInt();
		int ans = 0;
		for(int i=0; i<n; i++){
			int x = in.nextInt();
			int y = in.nextInt();
			if(i==0) ans = y-x;
			else if(y-x != ans) ans = -1;
		}
		System.out.println(ans>0?ans:-1);
	}
}

class Node{
	int id;
	HashSet<Node> edge = new HashSet<Node>();
	public Node(int id) {
		this.id = id;
	}
	public void createEdge(Node node) {
		edge.add(node);
	}
}

class MyComp implements Comparator<int[]> {
	final int idx;
	public MyComp(int idx){
		this.idx = idx;
	}
	public int compare(int[] a, int[] b) {
		return a[idx] - b[idx];
	}
}

class Reverse implements Comparator<Integer> {
	public int compare(Integer arg0, Integer arg1) {
		return arg1 - arg0;
	}
}


class ContestWriter {
	private PrintWriter out;

	public ContestWriter(String filename) throws IOException {
		out = new PrintWriter(new BufferedWriter(new FileWriter(filename)));
	}

	public ContestWriter() throws IOException {
		out = new PrintWriter(System.out);
	}

	public void println(String str) {
		out.println(str);
	}

	public void print(String str) {
		out.print(str);
	}

	public void close() {
		out.close();
	}
}

class ContestScanner {
	private BufferedReader reader;
	private String[] line;
	private int idx;

	public ContestScanner() throws FileNotFoundException {
		reader = new BufferedReader(new InputStreamReader(System.in));
	}

	public ContestScanner(String filename) throws FileNotFoundException {
		reader = new BufferedReader(new InputStreamReader(new FileInputStream(
				filename)));
	}

	public String nextToken() throws IOException {
		if (line == null || line.length <= idx) {
			line = reader.readLine().trim().split(" ");
			idx = 0;
		}
		return line[idx++];
	}
	
	public String readLine() throws IOException{
		return reader.readLine();
	}

	public long nextLong() throws IOException, NumberFormatException {
		return Long.parseLong(nextToken());
	}

	public int nextInt() throws NumberFormatException, IOException {
		return (int) nextLong();
	}

	public double nextDouble() throws NumberFormatException, IOException {
		return Double.parseDouble(nextToken());
	}
}
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