#345508 (Java21) No.648 　お　や　す　み

提出ソース

結果

問題	No.648 　お　や　す　み
ユーザー	Oland
提出日時	2019-05-07 10:56:41
言語	Java21 (openjdk 21)
結果	AC
実行時間	46 ms / 2,000 ms
コード長	3,817 bytes
コンパイル時間	2,375 ms
コンパイル使用メモリ	77,256 KB
実行使用メモリ	49,664 KB
最終ジャッジ日時	2023-09-14 16:23:59
合計ジャッジ時間	9,167 ms
ジャッジサーバーID （参考情報）	judge11 / judge14

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	45 ms 49,132 KB
testcase_01	AC	45 ms 49,248 KB
testcase_02	AC	45 ms 49,356 KB
testcase_03	AC	45 ms 49,620 KB
testcase_04	AC	44 ms 47,380 KB
testcase_05	AC	44 ms 49,336 KB
testcase_06	AC	43 ms 49,312 KB
testcase_07	AC	44 ms 49,416 KB
testcase_08	AC	44 ms 49,172 KB
testcase_09	AC	44 ms 49,252 KB
testcase_10	AC	43 ms 49,268 KB
testcase_11	AC	44 ms 49,196 KB
testcase_12	AC	45 ms 49,368 KB
testcase_13	AC	44 ms 49,388 KB
testcase_14	AC	44 ms 49,104 KB
testcase_15	AC	44 ms 49,216 KB
testcase_16	AC	44 ms 49,376 KB
testcase_17	AC	44 ms 49,104 KB
testcase_18	AC	44 ms 49,124 KB
testcase_19	AC	43 ms 49,100 KB
testcase_20	AC	44 ms 49,624 KB
testcase_21	AC	44 ms 49,364 KB
testcase_22	AC	44 ms 49,360 KB
testcase_23	AC	45 ms 49,456 KB
testcase_24	AC	44 ms 49,348 KB
testcase_25	AC	44 ms 49,664 KB
testcase_26	AC	44 ms 47,096 KB
testcase_27	AC	44 ms 49,336 KB
testcase_28	AC	45 ms 49,312 KB
testcase_29	AC	45 ms 49,276 KB
testcase_30	AC	44 ms 49,076 KB
testcase_31	AC	44 ms 49,536 KB
testcase_32	AC	44 ms 49,096 KB
testcase_33	AC	45 ms 49,320 KB
testcase_34	AC	45 ms 49,324 KB
testcase_35	AC	44 ms 49,212 KB
testcase_36	AC	45 ms 49,208 KB
testcase_37	AC	44 ms 49,252 KB
testcase_38	AC	45 ms 49,652 KB
testcase_39	AC	44 ms 49,108 KB
testcase_40	AC	46 ms 49,320 KB
testcase_41	AC	44 ms 49,368 KB
testcase_42	AC	44 ms 49,192 KB
testcase_43	AC	45 ms 49,056 KB
testcase_44	AC	44 ms 49,116 KB
testcase_45	AC	45 ms 49,124 KB
testcase_46	AC	44 ms 49,368 KB
testcase_47	AC	44 ms 49,376 KB
testcase_48	AC	44 ms 49,416 KB
testcase_49	AC	45 ms 49,348 KB
testcase_50	AC	45 ms 49,248 KB
testcase_51	AC	44 ms 49,112 KB
testcase_52	AC	46 ms 49,592 KB
testcase_53	AC	44 ms 49,276 KB
testcase_54	AC	44 ms 49,128 KB
testcase_55	AC	45 ms 49,160 KB
testcase_56	AC	45 ms 49,324 KB
testcase_57	AC	45 ms 49,380 KB
testcase_58	AC	45 ms 49,244 KB
testcase_59	AC	45 ms 49,328 KB
testcase_60	AC	44 ms 49,076 KB
testcase_61	AC	45 ms 49,304 KB
testcase_62	AC	44 ms 49,256 KB
testcase_63	AC	45 ms 49,272 KB
testcase_64	AC	45 ms 49,120 KB
testcase_65	AC	44 ms 49,112 KB
testcase_66	AC	45 ms 49,604 KB
testcase_67	AC	45 ms 49,308 KB
testcase_68	AC	44 ms 49,352 KB
testcase_69	AC	44 ms 49,208 KB
testcase_70	AC	44 ms 49,244 KB
testcase_71	AC	44 ms 49,208 KB
testcase_72	AC	44 ms 49,108 KB
testcase_73	AC	44 ms 49,328 KB
testcase_74	AC	44 ms 49,408 KB
testcase_75	AC	44 ms 49,392 KB
testcase_76	AC	44 ms 49,168 KB
testcase_77	AC	44 ms 49,124 KB
testcase_78	AC	45 ms 49,348 KB
testcase_79	AC	43 ms 49,364 KB
testcase_80	AC	45 ms 49,116 KB
testcase_81	AC	45 ms 49,088 KB
testcase_82	AC	44 ms 49,308 KB
testcase_83	AC	44 ms 49,204 KB

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ソースコード

raw source code

import java.io.*;
import java.util.*;
import java.util.Map.Entry;
import java.util.stream.Collectors;

@SuppressWarnings("unused")
public class Main {
	
	//final boolean isDebug = true;
	final boolean isDebug = false;
	String fileName = "input.txt";
	FastScanner sc;
	PrintWriter out;
	final int MOD = (int)1e9+7;
	final int INF = Integer.MAX_VALUE / 2;
	
	void solve() throws Exception{
		long n = sc.nextLong();
		long ok = 0, ng = 2*(long)1e9;
		while(Math.abs(ok - ng) > 1){
			long mid = (ok + ng) / 2;
			if(n >= mid * (mid + 1) / 2) ok = mid;
			else ng = mid;
		}
		if(ok * (ok + 1) / 2 == n){
			System.out.println("YES");
			System.out.println(ok);
		}else{
			System.out.println("NO");
		}
	}
	
	/* end solve */
	
	/* main */
	public static void main(String[] args) throws Exception {
		new Main().m();
	}
	
	void m() throws Exception {
		long S = System.currentTimeMillis();
		sc = (isDebug) ? new FastScanner(new FileInputStream(fileName)) : new FastScanner(System.in);
		out = new PrintWriter(System.out);
		solve();
		out.flush();
		long G = System.currentTimeMillis();
		if(isDebug){
			System.out.println("---Debug---");
			System.out.printf("%8d ms\n", (G-S));
		}
	}
	/* end main */
}
/* end Main */

class Pair{
	int p;
	double w, s;
	public Pair(double w, int p, double s){
		this.w = w; this.p = p; this.s = s;
	}
}

class FastScanner {
    private InputStream in;
    private final byte[] buffer = new byte[1024];
    private int ptr = 0;
    private int buflen = 0;
    public FastScanner(InputStream in) {
		this.in = in;
	}
    private boolean hasNextByte() {
        if (ptr < buflen) {
            return true;
        }else{
            ptr = 0;
            try {
                buflen = in.read(buffer);
            } catch (IOException e) {
                e.printStackTrace();
            }
            if (buflen <= 0) {
                return false;
            }
        }
        return true;
    }
    private int readByte() {
    	if (hasNextByte()) return buffer[ptr++];
    	else return -1;
    }
    private static boolean isPrintableChar(int c){
    	return 33 <= c && c <= 126;
    }
    public boolean hasNext() {
    	while(hasNextByte() && !isPrintableChar(buffer[ptr]))
    		ptr++; return hasNextByte();
    }
    public String next() {
        if (!hasNext()) throw new NoSuchElementException();
        StringBuilder sb = new StringBuilder();
        int b = readByte();
        while(isPrintableChar(b)) {
            sb.appendCodePoint(b);
            b = readByte();
        }
        return sb.toString();
    }
    public String nextLine() {
        if (!hasNext()) throw new NoSuchElementException();
        StringBuilder sb = new StringBuilder();
        int b = readByte();
        while(b != 10) {
            sb.appendCodePoint(b);
            b = readByte();
        }
        return sb.toString();
    }
    public long nextLong() {
        if (!hasNext()) throw new NoSuchElementException();
        long n = 0;
        boolean minus = false;
        int b = readByte();
        if (b == '-') {
            minus = true;
            b = readByte();
        }
        if (b < '0' || '9' < b) {
            throw new NumberFormatException();
        }
        while(true){
            if ('0' <= b && b <= '9') {
                n *= 10;
                n += b - '0';
            }else if(b == -1 || !isPrintableChar(b)){
                return minus ? -n : n;
            }else{
                throw new NumberFormatException();
            }
            b = readByte();
        }
    }
    public int nextInt() {
        long nl = nextLong();
        if (nl < Integer.MIN_VALUE || nl > Integer.MAX_VALUE) throw new NumberFormatException();
        return (int) nl;
    }
    public double nextDouble() {
    	return Double.parseDouble(next());
    }
}

yukicoder

結果

テストケース

ソースコード