結果
問題 | No.2023 Tiling is Fun |
ユーザー | 37zigen |
提出日時 | 2022-07-29 21:57:47 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 128 ms / 2,000 ms |
コード長 | 3,246 bytes |
コンパイル時間 | 2,612 ms |
コンパイル使用メモリ | 77,984 KB |
実行使用メモリ | 51,184 KB |
最終ジャッジ日時 | 2024-07-19 14:37:58 |
合計ジャッジ時間 | 5,433 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge4 |
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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 | 58 ms
50,112 KB |
testcase_01 | AC | 105 ms
50,928 KB |
testcase_02 | AC | 81 ms
51,184 KB |
testcase_03 | AC | 83 ms
50,820 KB |
testcase_04 | AC | 61 ms
50,816 KB |
testcase_05 | AC | 82 ms
51,124 KB |
testcase_06 | AC | 84 ms
50,824 KB |
testcase_07 | AC | 114 ms
50,908 KB |
testcase_08 | AC | 95 ms
51,040 KB |
testcase_09 | AC | 103 ms
50,932 KB |
testcase_10 | AC | 105 ms
51,012 KB |
testcase_11 | AC | 56 ms
50,304 KB |
testcase_12 | AC | 57 ms
50,256 KB |
testcase_13 | AC | 56 ms
49,992 KB |
testcase_14 | AC | 91 ms
50,796 KB |
testcase_15 | AC | 92 ms
51,044 KB |
testcase_16 | AC | 91 ms
51,064 KB |
testcase_17 | AC | 128 ms
50,876 KB |
testcase_18 | AC | 127 ms
51,100 KB |
testcase_19 | AC | 107 ms
51,000 KB |
ソースコード
import java.io.IOException; import java.io.InputStream; import java.io.PrintWriter; import java.util.ArrayList; import java.util.Arrays; import java.util.NoSuchElementException; public class Main implements Runnable { public static void main(String[] args) { new Thread(null, new Main(), "", Runtime.getRuntime().maxMemory()).start(); } final long mod = 998244353; long pow(long a, long n) { if (n == 0) return 1; return pow(a * a % mod, n / 2) * (n % 2 == 1 ? a : 1) % mod; } long inv(long a) { return pow(a, mod - 2); } long c(int n, int k) { if (n-k<0 || k<0) return 0; long v = 1; for (int i=1;i<=n;++i) v = v * i % mod; for (int i=1;i<=k;++i) v = v * inv(i) % mod; for (int i=1;i<=n-k;++i) v = v * inv(i) % mod; return v; } public void run() { FastScanner sc=new FastScanner(); PrintWriter pw=new PrintWriter(System.out); int A = sc.nextInt() - 1; int B = sc.nextInt() - 1; System.out.println(c(A + B, B)); pw.close(); } void tr(Object...objects) {System.err.println(Arrays.deepToString(objects));} } class FastScanner { private final InputStream in = System.in; private final byte[] buffer = new byte[1024]; private int ptr = 0; private int buflen = 0; 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;} private void skipUnprintable() { while(hasNextByte() && !isPrintableChar(buffer[ptr])) ptr++;} public boolean hasNext() { skipUnprintable(); 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 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() { return (int)nextLong(); } }