結果

問題 No.630 門松グラフ
ユーザー yuya178yuya178
提出日時 2018-01-06 19:28:07
言語 Java21
(openjdk 21)
結果
WA  
実行時間 -
コード長 4,116 bytes
コンパイル時間 3,186 ms
コンパイル使用メモリ 91,740 KB
実行使用メモリ 46,016 KB
最終ジャッジ日時 2024-06-02 11:34:39
合計ジャッジ時間 9,630 ms
ジャッジサーバーID
（参考情報） 		judge3 / judge2
このコードへのチャレンジ
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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 77 ms
39,772 KB
testcase_01 AC 47 ms
36,652 KB
testcase_02 AC 46 ms
36,632 KB
testcase_03 WA -
testcase_04 WA -
testcase_05 AC 46 ms
36,764 KB
testcase_06 AC 46 ms
36,948 KB
testcase_07 AC 77 ms
37,932 KB
testcase_08 AC 85 ms
38,316 KB
testcase_09 AC 47 ms
36,668 KB
testcase_10 AC 45 ms
36,820 KB
testcase_11 WA -
testcase_12 WA -
testcase_13 AC 47 ms
36,864 KB
testcase_14 WA -
testcase_15 WA -
testcase_16 AC 79 ms
39,712 KB
testcase_17 AC 77 ms
38,304 KB
testcase_18 AC 73 ms
37,972 KB
testcase_19 AC 74 ms
38,896 KB
testcase_20 AC 44 ms
36,892 KB
testcase_21 AC 46 ms
36,800 KB
testcase_22 AC 47 ms
36,536 KB
testcase_23 AC 46 ms
36,792 KB
testcase_24 WA -
testcase_25 AC 44 ms
36,824 KB
testcase_26 AC 255 ms
45,808 KB
testcase_27 AC 236 ms
44,788 KB
testcase_28 AC 47 ms
36,900 KB
testcase_29 AC 281 ms
45,460 KB
testcase_30 AC 284 ms
45,484 KB
testcase_31 WA -
testcase_32 AC 241 ms
45,236 KB
testcase_33 WA -
testcase_34 WA -
testcase_35 AC 207 ms
45,308 KB
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ソースコード

diff # 

import java.io.*;
import java.util.*;
import java.math.*;
// import java.awt.Point;
 
public class Main {
    InputStream is;
    PrintWriter out;
    String INPUT = "";
 
    long MOD = 1_000_000_007;
    int inf = Integer.MAX_VALUE;
    List<Integer>[] arr;
    List<Integer>[] arr2;
    boolean[] seen;
    int[] count;
    void solve(){
        int n = ni();
        int m = ni();
        long sum = 0;
        int res = n/2;
        if(n%2==0) sum = (1+res)*res - res;
        if(n%2==1) sum = (1+res)*res;
        if(m<n-1 || m>sum){
            out.println("NO");
            return;
        }
        out.println("YES");
        for(int i = 1; i <= n/2; i++){
            out.print(i+" ");
            out.print((i+n/2)+" ");
        }
        if(n%2==1) out.print(n);
        out.println();
        long ans = 0;
        for(int i = 1; i <= n; i++){
            for(int j = i+1; j <= n; j+=2){
                out.println(i+" "+j);
                ans++;
                if(ans==m){
                    return;
                }
            }
        }
    }

    void run() throws Exception
    {
        is = INPUT.isEmpty() ? System.in : new ByteArrayInputStream(INPUT.getBytes());
        out = new PrintWriter(System.out);
        long s = System.currentTimeMillis();
        solve();
        out.flush();
        if(!INPUT.isEmpty())tr(System.currentTimeMillis()-s+"ms");
    }
    
    public static void main(String[] args) throws Exception { new Main().run(); }
    
    private byte[] inbuf = new byte[1024];
    private int lenbuf = 0, ptrbuf = 0;
    
    private int readByte()
    {
        if(lenbuf == -1)throw new InputMismatchException();
        if(ptrbuf >= lenbuf){
            ptrbuf = 0;
            try { lenbuf = is.read(inbuf); } catch (IOException e) { throw new InputMismatchException(); }
            if(lenbuf <= 0)return -1;
        }
        return inbuf[ptrbuf++];
    }
    
    private boolean isSpaceChar(int c) { return !(c >= 33 && c <= 126); }
    private int skip() { int b; while((b = readByte()) != -1 && isSpaceChar(b)); return b; }
    
    private double nd() { return Double.parseDouble(ns()); }
    private char nc() { return (char)skip(); }
    
    private String ns()
    {
        int b = skip();
        StringBuilder sb = new StringBuilder();
        while(!(isSpaceChar(b) && b != ' ')){
            sb.appendCodePoint(b);
            b = readByte();
        }
        return sb.toString();
    }
    
    private char[] ns(int n)
    {
        char[] buf = new char[n];
        int b = skip(), p = 0;
        while(p < n && !(isSpaceChar(b))){
            buf[p++] = (char)b;
            b = readByte();
        }
        return n == p ? buf : Arrays.copyOf(buf, p);
    }
    
    private char[][] nm(int n, int m)
    {
        char[][] map = new char[n][];
        for(int i = 0;i < n;i++)map[i] = ns(m);
        return map;
    }
    
    private int[] na(int n)
    {
        int[] a = new int[n];
        for(int i = 0;i < n;i++)a[i] = ni();
        return a;
    }
    
    private int ni()
    {
        int num = 0, b;
        boolean minus = false;
        while((b = readByte()) != -1 && !((b >= '0' && b <= '9') || b == '-'));
        if(b == '-'){
            minus = true;
            b = readByte();
        }
        
        while(true){
            if(b >= '0' && b <= '9'){
                num = num * 10 + (b - '0');
            }else{
                return minus ? -num : num;
            }
            b = readByte();
        }
    }
    
    private long nl()
    {
        long num = 0;
        int b;
        boolean minus = false;
        while((b = readByte()) != -1 && !((b >= '0' && b <= '9') || b == '-'));
        if(b == '-'){
            minus = true;
            b = readByte();
        }
        
        while(true){
            if(b >= '0' && b <= '9'){
                num = num * 10 + (b - '0');
            }else{
                return minus ? -num : num;
            }
            b = readByte();
        }
    }
    
    private static void tr(Object... o) { System.out.println(Arrays.deepToString(o)); }
 
}
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