結果
問題 | No.1050 Zero (Maximum) |
ユーザー | 37zigen |
提出日時 | 2020-05-08 22:32:30 |
言語 | Java (openjdk 23) |
結果 |
AC
|
実行時間 | 135 ms / 2,000 ms |
コード長 | 3,241 bytes |
コンパイル時間 | 2,031 ms |
コンパイル使用メモリ | 78,116 KB |
実行使用メモリ | 51,956 KB |
最終ジャッジ日時 | 2024-07-04 00:58:50 |
合計ジャッジ時間 | 4,287 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 3 |
other | AC * 15 |
ソースコード
import java.io.IOException; import java.io.InputStream; import java.util.Arrays; import java.util.HashMap; import java.util.NoSuchElementException; public class Main{ public static void main(String[] args) { new Main().run(); } final long MOD=(long)1e9+7; long[][] mul(long[][] a,long[][] b) { long[][] ret=new long[a.length][b[0].length]; for (int i=0;i<a.length;++i) { for (int j=0;j<b[i].length;++j) { for (int k=0;k<a[i].length;++k) { ret[i][j]+=a[i][k]*b[k][j]%MOD; ret[i][j]%=MOD; } } } return ret; } long[][] pow(long[][] a,int n) { long[][] ret=new long[a.length][a.length]; for (int i=0;i<a.length;++i) ret[i][i]=1; for (;n>0;n>>=1,a=mul(a,a)) { if (n%2==1) ret=mul(ret,a); } return ret; } void run() { FastScanner sc=new FastScanner(); int M=sc.nextInt(); int K=sc.nextInt(); long[][] mat=new long[M][M]; for (int cur=0;cur<M;++cur) { for (int add=0;add<M;++add) { int ncur=(cur+add)%M; mat[ncur][cur]++; } for (int mul=0;mul<M;++mul) { int ncur=cur*mul%M; mat[ncur][cur]++; } } long[][] vec=new long[M][1]; vec[0][0]=1; vec=mul(pow(mat,K),vec); System.out.println(vec[0][0]); } 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(); } }