結果
問題 | No.1100 Boxes |
ユーザー | 37zigen |
提出日時 | 2020-05-18 17:40:19 |
言語 | Java21 (openjdk 21) |
結果 |
WA
|
実行時間 | - |
コード長 | 3,196 bytes |
コンパイル時間 | 2,617 ms |
コンパイル使用メモリ | 78,132 KB |
実行使用メモリ | 54,960 KB |
最終ジャッジ日時 | 2024-10-01 22:11:06 |
合計ジャッジ時間 | 9,235 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
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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 | 132 ms
52,988 KB |
testcase_01 | AC | 133 ms
53,220 KB |
testcase_02 | AC | 132 ms
53,108 KB |
testcase_03 | AC | 133 ms
53,176 KB |
testcase_04 | AC | 133 ms
52,856 KB |
testcase_05 | AC | 134 ms
52,816 KB |
testcase_06 | AC | 134 ms
52,864 KB |
testcase_07 | AC | 131 ms
53,172 KB |
testcase_08 | AC | 131 ms
52,940 KB |
testcase_09 | AC | 133 ms
53,168 KB |
testcase_10 | WA | - |
testcase_11 | AC | 134 ms
53,004 KB |
testcase_12 | AC | 130 ms
52,840 KB |
testcase_13 | AC | 131 ms
53,080 KB |
testcase_14 | WA | - |
testcase_15 | WA | - |
testcase_16 | AC | 133 ms
54,960 KB |
testcase_17 | WA | - |
testcase_18 | WA | - |
testcase_19 | AC | 133 ms
52,980 KB |
testcase_20 | WA | - |
testcase_21 | WA | - |
testcase_22 | WA | - |
testcase_23 | AC | 148 ms
52,880 KB |
testcase_24 | AC | 153 ms
53,176 KB |
testcase_25 | AC | 156 ms
52,848 KB |
testcase_26 | AC | 173 ms
52,840 KB |
testcase_27 | AC | 166 ms
53,276 KB |
testcase_28 | AC | 142 ms
53,188 KB |
testcase_29 | AC | 170 ms
53,072 KB |
testcase_30 | AC | 162 ms
53,100 KB |
testcase_31 | AC | 145 ms
53,200 KB |
testcase_32 | AC | 158 ms
53,104 KB |
testcase_33 | AC | 174 ms
53,256 KB |
testcase_34 | AC | 175 ms
53,176 KB |
testcase_35 | AC | 134 ms
53,088 KB |
testcase_36 | WA | - |
testcase_37 | AC | 132 ms
53,116 KB |
testcase_38 | AC | 148 ms
53,212 KB |
testcase_39 | AC | 174 ms
52,836 KB |
ソースコード
import java.io.IOException; import java.io.InputStream; import java.io.PrintWriter; import java.util.ArrayDeque; import java.util.ArrayList; import java.util.Arrays; import java.util.NoSuchElementException; public class Main{ public static void main(String[] args) { new Main().run(); } final long MOD=998244353; long pow(long a,long n) { return n!=0?pow(a*a%MOD,n/2)*(n%2==1?a:1)%MOD:1; } long inv(long a) { return pow(a,MOD-2); } int MAX=(int)2e5; long[] fac=new long[MAX]; long[] ifac=new long[MAX]; { fac[0]=ifac[0]=1; for (int i=1;i<MAX;++i) { fac[i]=i*fac[i-1]%MOD; ifac[i]=inv(fac[i]); } } long comb(int n,int k) { return fac[n]*ifac[k]%MOD*ifac[n-k]%MOD; } void run() { FastScanner sc=new FastScanner(); int N=sc.nextInt(); int K=sc.nextInt(); long anb=0; long apb=pow(K,N); for (int i=0;i<=Math.min(N, K);++i) { anb+=pow(MOD-2,i)*pow(K-i,N)%MOD*comb(K,i)%MOD; anb%=MOD; } long ans=(apb+MOD-anb)%MOD*inv(2)%MOD; System.out.println(ans); } void tr(Object...objects) {System.out.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;} 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 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());} }