結果
問題 | No.1035 Color Box |
ユーザー | 37zigen |
提出日時 | 2020-05-09 21:23:04 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 217 ms / 2,000 ms |
コード長 | 2,922 bytes |
コンパイル時間 | 2,250 ms |
コンパイル使用メモリ | 77,936 KB |
実行使用メモリ | 55,712 KB |
最終ジャッジ日時 | 2024-07-06 04:59:28 |
合計ジャッジ時間 | 10,692 ms |
ジャッジサーバーID (参考情報) |
judge1 / 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 | 217 ms
55,296 KB |
testcase_01 | AC | 178 ms
55,548 KB |
testcase_02 | AC | 177 ms
55,172 KB |
testcase_03 | AC | 180 ms
55,308 KB |
testcase_04 | AC | 181 ms
55,280 KB |
testcase_05 | AC | 183 ms
55,512 KB |
testcase_06 | AC | 168 ms
55,004 KB |
testcase_07 | AC | 179 ms
55,236 KB |
testcase_08 | AC | 204 ms
55,440 KB |
testcase_09 | AC | 190 ms
55,460 KB |
testcase_10 | AC | 176 ms
55,516 KB |
testcase_11 | AC | 177 ms
55,428 KB |
testcase_12 | AC | 177 ms
55,508 KB |
testcase_13 | AC | 202 ms
55,412 KB |
testcase_14 | AC | 192 ms
54,892 KB |
testcase_15 | AC | 207 ms
55,496 KB |
testcase_16 | AC | 176 ms
55,424 KB |
testcase_17 | AC | 177 ms
55,632 KB |
testcase_18 | AC | 165 ms
55,184 KB |
testcase_19 | AC | 209 ms
55,712 KB |
testcase_20 | AC | 168 ms
55,184 KB |
testcase_21 | AC | 181 ms
55,576 KB |
testcase_22 | AC | 164 ms
55,124 KB |
testcase_23 | AC | 181 ms
55,508 KB |
testcase_24 | AC | 179 ms
55,496 KB |
testcase_25 | AC | 178 ms
55,516 KB |
testcase_26 | AC | 177 ms
55,436 KB |
testcase_27 | AC | 167 ms
55,184 KB |
testcase_28 | AC | 178 ms
55,256 KB |
testcase_29 | AC | 178 ms
55,604 KB |
testcase_30 | AC | 165 ms
55,336 KB |
testcase_31 | AC | 167 ms
55,036 KB |
testcase_32 | AC | 177 ms
55,448 KB |
testcase_33 | AC | 178 ms
55,516 KB |
testcase_34 | AC | 178 ms
55,532 KB |
testcase_35 | AC | 169 ms
55,148 KB |
testcase_36 | AC | 178 ms
55,572 KB |
testcase_37 | AC | 179 ms
55,292 KB |
ソースコード
import java.io.IOException; import java.io.InputStream; import java.util.Arrays; import java.util.NoSuchElementException; public class Main{ public static void main(String[] args) { new Main().solve(); } final long MOD=(long)1e9+7; int MAX=(int)3e5; long[] fac=new long[MAX]; long[] ifac=new long[MAX]; { fac[0]=1; for (int i=1;i<MAX;++i) fac[i]=fac[i-1]*i%MOD; for (int i=0;i<MAX;++i) ifac[i]=inv(fac[i]); } 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); } long comb(int n,int k) { return fac[n]*ifac[k]%MOD*ifac[n-k]%MOD; } void solve() { FastScanner sc=new FastScanner(); long N=sc.nextLong(); long M=sc.nextLong(); long ans=0; for (int i=0;i<M;++i) { ans+=comb((int)M,i)*pow(M-i,N)%MOD*(i%2==0?1:(MOD-1))%MOD; ans%=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;} 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(); } }