結果
問題 | No.1827 最長部分スーパーリッチ門松列列 |
ユーザー | 37zigen |
提出日時 | 2022-01-20 21:43:10 |
言語 | Java (openjdk 23) |
結果 |
AC
|
実行時間 | 210 ms / 2,000 ms |
コード長 | 4,139 bytes |
コンパイル時間 | 3,101 ms |
コンパイル使用メモリ | 81,916 KB |
実行使用メモリ | 44,524 KB |
最終ジャッジ日時 | 2024-11-24 06:40:40 |
合計ジャッジ時間 | 9,400 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge4 |
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ファイルパターン | 結果 |
---|---|
sample | AC * 1 |
other | AC * 24 |
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; class Main { public static void main(String[] args) { new Main().run(); } void run() { FastScanner sc=new FastScanner(); int T=sc.nextInt(); PrintWriter pw=new PrintWriter(System.out); while (T-->0) { int N=sc.nextInt(); int[] P=new int[N]; for (int i=0;i<N;++i) { P[i]=sc.nextInt()-1; } pw.println(solve(N, P)); } pw.close(); } long solve(int N, int[] P) { int[] sum=new int[N+1]; for (int i=0;i+1<N;++i) { int lower=Math.min(P[i], P[i+1]); int upper=Math.max(P[i], P[i+1]); sum[lower]+=1; sum[upper]-=1; } for (int i=0;i+1<N;++i) { sum[i+1]+=sum[i]; } int ans=1+Arrays.stream(sum).max().getAsInt(); return ans; } static void tr(Object...objects) { System.out.println(Arrays.deepToString(objects)); } } class BruteForce { class DSU { int[] parent; public DSU(int n) { parent=new int[n]; Arrays.fill(parent, -1); } int root(int x) { return parent[x] < 0 ? x : (parent[x] = root(parent[x])); } void union(int x, int y) { x=root(x); y=root(y); if (x==y) return; parent[y]+=parent[x]; parent[x]=y; } boolean equiv(int x, int y) { return root(x) == root(y); } } int gcd(int a, int b) { if (a == 0) return b; return gcd(b%a, a); } boolean iscoprime(int a, int b) { return gcd(a, b) == 1; } int grundy(ArrayList<Integer> set, int mod) { DSU dsu=new DSU(mod); for (int i=1;i<mod;++i) { if (!iscoprime(i, mod)) continue; for (int a : set) { dsu.union(i*a%mod, i); } } boolean equiv = true; for (int i=1;i<mod;++i) if (iscoprime(i, mod)) equiv &= dsu.equiv(1, i); if (equiv) return 0; boolean[] vis=new boolean[mod]; for (int i=1;i<mod;++i) if (iscoprime(i, mod)) { loop:for (int j=1;j<mod;++j) if (iscoprime(j, mod)) { if (!dsu.equiv(i, i*j%mod)){ set.add(j); vis[grundy(set, mod)]=true; set.remove(set.size()-1); continue loop; } } } int ret=0; while (vis[ret]) ++ret; return ret; } } 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(); } }