結果

問題 No.630 門松グラフ
ユーザー yuya178yuya178
提出日時 2018-01-06 19:35:44
言語 Java21
(openjdk 21)
結果
AC  
実行時間 297 ms / 1,500 ms
コード長 4,180 bytes
コンパイル時間 2,283 ms
コンパイル使用メモリ 80,772 KB
実行使用メモリ 46,808 KB
最終ジャッジ日時 2024-06-02 11:34:49
合計ジャッジ時間 8,182 ms
ジャッジサーバーID
（参考情報） 		judge2 / judge1
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 80 ms
38,364 KB
testcase_01 AC 46 ms
36,772 KB
testcase_02 AC 47 ms
36,876 KB
testcase_03 AC 81 ms
38,776 KB
testcase_04 AC 90 ms
40,156 KB
testcase_05 AC 47 ms
36,836 KB
testcase_06 AC 48 ms
37,036 KB
testcase_07 AC 75 ms
37,932 KB
testcase_08 AC 85 ms
38,396 KB
testcase_09 AC 49 ms
37,032 KB
testcase_10 AC 48 ms
36,784 KB
testcase_11 AC 80 ms
38,628 KB
testcase_12 AC 81 ms
38,596 KB
testcase_13 AC 47 ms
36,764 KB
testcase_14 AC 92 ms
38,892 KB
testcase_15 AC 75 ms
38,204 KB
testcase_16 AC 87 ms
38,896 KB
testcase_17 AC 82 ms
39,608 KB
testcase_18 AC 79 ms
39,632 KB
testcase_19 AC 83 ms
39,592 KB
testcase_20 AC 47 ms
36,552 KB
testcase_21 AC 47 ms
36,960 KB
testcase_22 AC 48 ms
36,984 KB
testcase_23 AC 47 ms
37,080 KB
testcase_24 AC 238 ms
44,928 KB
testcase_25 AC 47 ms
36,876 KB
testcase_26 AC 237 ms
45,628 KB
testcase_27 AC 247 ms
44,584 KB
testcase_28 AC 47 ms
36,856 KB
testcase_29 AC 297 ms
46,808 KB
testcase_30 AC 282 ms
45,772 KB
testcase_31 AC 266 ms
45,352 KB
testcase_32 AC 247 ms
45,248 KB
testcase_33 AC 200 ms
43,620 KB
testcase_34 AC 257 ms
45,336 KB
testcase_35 AC 223 ms
45,964 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 <= res; i++){
            out.print(i+" ");
            if(n%2==0) out.print((i+res)+" ");
            if(n%2==1) out.print((i+res+1)+" ");
        }
        if(n%2==1) out.print(res+1);
        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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