結果
| 問題 |
No.185 和風
|
| コンテスト | |
| ユーザー |
threepipes_s
|
| 提出日時 | 2015-04-19 23:23:33 |
| 言語 | Java (openjdk 23) |
| 結果 |
AC
|
| 実行時間 | 85 ms / 1,000 ms |
| コード長 | 2,709 bytes |
| コンパイル時間 | 2,494 ms |
| コンパイル使用メモリ | 79,204 KB |
| 実行使用メモリ | 38,592 KB |
| 最終ジャッジ日時 | 2024-07-04 18:18:49 |
| 合計ジャッジ時間 | 3,252 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge2 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| other | AC * 7 |
ソースコード
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());
}
}
threepipes_s