結果

問題 No.129 お年玉(2)
ユーザー t8m8⛄️t8m8⛄️
提出日時 2015-03-12 08:58:13
言語 Java21
(openjdk 21)
結果
RE  
実行時間 -
コード長 3,785 bytes
コンパイル時間 3,950 ms
コンパイル使用メモリ 78,952 KB
実行使用メモリ 37,256 KB
最終ジャッジ日時 2024-06-24 17:21:13
合計ジャッジ時間 7,588 ms
ジャッジサーバーID
(参考情報)
judge1 / judge3
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 RE -
testcase_01 RE -
testcase_02 AC 52 ms
36,928 KB
testcase_03 AC 52 ms
37,244 KB
testcase_04 AC 51 ms
37,256 KB
testcase_05 RE -
testcase_06 RE -
testcase_07 RE -
testcase_08 RE -
testcase_09 RE -
testcase_10 RE -
testcase_11 RE -
testcase_12 RE -
testcase_13 RE -
testcase_14 RE -
testcase_15 RE -
testcase_16 RE -
testcase_17 RE -
testcase_18 RE -
testcase_19 RE -
testcase_20 RE -
testcase_21 RE -
testcase_22 RE -
testcase_23 RE -
testcase_24 RE -
testcase_25 RE -
testcase_26 RE -
testcase_27 RE -
testcase_28 RE -
testcase_29 AC 51 ms
37,168 KB
testcase_30 AC 52 ms
36,952 KB
testcase_31 AC 52 ms
37,080 KB
testcase_32 AC 52 ms
37,056 KB
testcase_33 AC 51 ms
37,076 KB
testcase_34 AC 53 ms
36,972 KB
testcase_35 AC 53 ms
37,216 KB
testcase_36 AC 53 ms
37,244 KB
testcase_37 AC 52 ms
37,216 KB
testcase_38 RE -
testcase_39 RE -
testcase_40 RE -
testcase_41 RE -
testcase_42 RE -
testcase_43 RE -
testcase_44 RE -
testcase_45 RE -
testcase_46 RE -
testcase_47 RE -
testcase_48 RE -
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ソースコード

diff #

//No.129 お年玉(2)

import java.util.*;
import java.io.*;
import java.math.*;
import static java.util.Arrays.*;
import static java.lang.Math.*;

public class No129 {

    static final InputStream in = System.in;
    static final PrintWriter out = new PrintWriter(System.out,false);

    static void solve(){
        int n = nextInt();
        int m = nextInt();
        n -= n/1000/m*m*1000;
        n /= 1000;
        out.println(combination(m,n,new BigInteger("1000000000")));
    }

    static BigInteger combination(int n, int r, BigInteger MOD) {
        BigInteger ret = BigInteger.ONE;
        for (int i=n-r+1; i<=n; i++) ret = ret.multiply(BigInteger.valueOf(i));
        for (int i=1; i<=r; i++) ret = ret.divide(BigInteger.valueOf(i));
        ret = ret.mod(MOD);
        return  ret;
    }

    public static void main(String[] args) throws Exception {
        long start = System.currentTimeMillis();

        solve();
        out.flush();

        long end = System.currentTimeMillis();
        //trace(end-start + "ms");
        in.close();
    }

    static void trace(Object... o) { System.out.println(deepToString(o));}

    static final byte[] buf = new byte[1024];
    static int ptr = 0;
    static int buflen = 0;

    static boolean hasNextByte() {
        if (ptr < buflen)
            return true;
        ptr = 0;
        try{
            buflen = in.read(buf);
        }catch (IOException e) {e.printStackTrace();}
        if (buflen <= 0)
            return false;
        return true;
    }

    static int readByte() { if (hasNextByte()) return buf[ptr++]; else return -1;}

    static boolean isPrintableChar(int c) { return 33 <= c && c <= 126;}

    static void skip() { while(hasNextByte() && !isPrintableChar(buf[ptr])) ptr++;}

    static boolean hasNext() {skip(); return hasNextByte();}

    static 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();
    }

    static long nextLong() {
        if (!hasNext()) throw new NoSuchElementException();
        boolean minus = false;
        long num = readByte();

        if(num == '-'){
            num = 0;
            minus = true;
        }else if (num < '0' || '9' < num){
            throw new NumberFormatException();
        }else{
            num -= '0';
        }
        
        while(true){
            int b = readByte();
            if('0' <= b && b <= '9')
                num = num * 10 + (b - '0');
            else if(b == -1 || !isPrintableChar(b))
                return minus ? -num : num;
            else
                throw new NoSuchElementException();
        }
    }

    static int nextInt() {
        long num = nextLong();
        if (num < Integer.MIN_VALUE || Integer.MAX_VALUE < num)
            throw new NumberFormatException();
        return (int)num;
    }

    static double nextDouble() {
        return Double.parseDouble(next());
    }

    static char nextChar() {
        if (!hasNext()) throw new NoSuchElementException();
        return (char)readByte();
    }

    static String nextLine() {
        while (hasNextByte() && (buf[ptr] == '\n' || buf[ptr] == '\r')) ptr++;
        if (!hasNextByte()) throw new NoSuchElementException();

        StringBuilder sb = new StringBuilder();
        int b = readByte();
        while (b != '\n' && b != '\r') {
            sb.appendCodePoint(b);
            b = readByte();
        }

        return sb.toString();
    }

    static int[] nextArrayInt(int n) {
        int[] a = new int[n];
        for (int i=0; i<n; i++) a[i] = nextInt();
        return a;
    }
}
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