#214261 (Java21) No.590 Replacement

提出ソース

結果

問題	No.590 Replacement
ユーザー	uwi
提出日時	2017-11-04 00:31:47
言語	Java21 (openjdk 21)
結果	WA
実行時間	-
コード長	6,015 bytes
コンパイル時間	4,937 ms
コンパイル使用メモリ	85,308 KB
実行使用メモリ	56,732 KB
最終ジャッジ日時	2024-11-23 15:32:19
合計ジャッジ時間	15,344 ms
ジャッジサーバーID （参考情報）	judge1 / judge3

このコードへのチャレンジ
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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	52 ms 37,120 KB
testcase_01	AC	51 ms 37,300 KB
testcase_02	AC	51 ms 36,920 KB
testcase_03	WA	-
testcase_04	WA	-
testcase_05	WA	-
testcase_06	AC	52 ms 37,228 KB
testcase_07	WA	-
testcase_08	WA	-
testcase_09	WA	-
testcase_10	WA	-
testcase_11	WA	-
testcase_12	WA	-
testcase_13	WA	-
testcase_14	WA	-
testcase_15	WA	-
testcase_16	WA	-
testcase_17	WA	-
testcase_18	WA	-
testcase_19	WA	-
testcase_20	WA	-
testcase_21	WA	-
testcase_22	WA	-
testcase_23	WA	-
testcase_24	WA	-
testcase_25	WA	-
testcase_26	WA	-
testcase_27	WA	-
testcase_28	WA	-
testcase_29	WA	-
testcase_30	WA	-
testcase_31	WA	-
testcase_32	WA	-
testcase_33	AC	52 ms 37,360 KB
testcase_34	AC	53 ms 37,208 KB
testcase_35	AC	52 ms 37,336 KB
testcase_36	AC	237 ms 50,792 KB
testcase_37	AC	240 ms 50,948 KB
testcase_38	WA	-
testcase_39	WA	-
testcase_40	WA	-
testcase_41	WA	-
testcase_42	WA	-
testcase_43	WA	-
testcase_44	AC	232 ms 56,140 KB
testcase_45	AC	239 ms 48,764 KB
testcase_46	AC	238 ms 49,624 KB

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ソースコード

raw source code

package contest171104;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.Comparator;
import java.util.InputMismatchException;

public class E {
	InputStream is;
	PrintWriter out;
	String INPUT = "";
	
	void solve()
	{
		int n = ni();
		int[] a = na(n);
		for(int i = 0;i < n;i++)a[i]--;
		a = invf(a);
		int[] b = na(n);
		for(int i = 0;i < n;i++)b[i]--;
		b = invf(b);
		
		int[][] csa = splitIntoCycles(a);
		int[] csaid = new int[n];
		int[] csaind = new int[n];
		for(int i = 0;i < csa.length;i++){
			for(int j = 0;j < csa[i].length;j++){
				csaid[csa[i][j]] = i;
				csaind[csa[i][j]] = j;
			}
		}
		
		int[][] csb = splitIntoCycles(b);
		int[] csbid = new int[n];
		int[] csbind = new int[n];
		for(int i = 0;i < csb.length;i++){
			for(int j = 0;j < csb[i].length;j++){
				csbid[csb[i][j]] = i;
				csbind[csb[i][j]] = j;
			}
		}
		
		int[][] qs = new int[n][];
		for(int i = 0;i < n;i++){
			int g = gcd(csa[csaid[i]].length, csb[csbid[i]].length);
			qs[i] = new int[]{csaid[i], csaind[i], csbid[i], csbind[i], (int)((csaind[i] - csbind[i] + g * 9999999999L) % g), g};
		}
		long ans = 0;
		Arrays.sort(qs, new Comparator<int[]>() {
			public int compare(int[] a, int[] b) {
				if(a[0] != b[0])return a[0] - b[0];
				if(a[2] != b[2])return a[2] - b[2];
				return a[4] - b[4];
			}
		});
		int mod = 1000000007;
		for(int i = 0;i < n;){
			int j = i;
			while(j < n && qs[i][0] == qs[j][0] && qs[i][2] == qs[j][2] && qs[i][4] == qs[j][4])j++;
			
			int g = qs[i][5];
			long p = (long)csa[qs[i][0]].length * csb[qs[i][2]].length / g;
			long[] poss = new long[j-i];
			for(int k = i;k < j;k++){
				poss[k-i] = crt(
						csa[qs[k][0]].length / g, qs[k][1] / g,
						csb[qs[k][2]].length / g, qs[k][3] / g);
			}
			Arrays.sort(poss);
//			tr(csa[qs[i][0]], csb[qs[i][2]], poss, p);
			for(int k = 1;k < j-i;k++){
				long ch = poss[k] - poss[k-1];
				ch %= mod;
				ans += (ch-1)*ch/2;
				ans %= mod;
			}
			long ch = poss[0] - poss[j-i-1] + p;
			ch %= mod;
			ans += (ch-1)*ch/2;
			ans %= mod;
//			tr(ans);
			
			i = j;
		}
		out.println(ans);
	}
	
	public static long crt(long p, long m, long q, long n)
	{
		long a = p, b = q;
		long pp = 1, qq = 0;
		while(b > 0){
			long c = a / b;
			long d;
			d = a; a = b; b = d % b;
			d = pp; pp = qq; qq = d - c * qq;
		}
		if((n - m) % a != 0)return -1;
		long mod = p / a * q;
		long ret = (p * pp % mod * ((n - m) / a) + m) % mod;
//		long ret = (mul(mul(p, pp, mod), (n-m)/a, mod)+m)%mod;
		if(ret < 0)ret += mod;
		return ret;
	}

	
	public static int gcd(int a, int b) {
		while (b > 0) {
			int c = a;
			a = b;
			b = c % b;
		}
		return a;
	}
	
	
	static int[] invf(int[] f)
	{
		int n = f.length;
		int[] u = new int[n];
		for(int i = 0;i < n;i++){
			u[f[i]] = i;
		}
		return u;
	}
	
	
	
	public static int[][] splitIntoCycles(int[] f)
	{
		int n = f.length;
		int[][] cycles = new int[n][];
		boolean[] ved = new boolean[n];
		int[] row = new int[n];
		int q = 0;
		for(int i = 0;i < n;i++){
			if(!ved[i]){
				int p = 0;
				for(int cur = i;!ved[cur];cur = f[cur]){
					ved[cur] = true;
					row[p++] = cur;
				}
				cycles[q++] = Arrays.copyOf(row, p);
			}
		}
		return Arrays.copyOf(cycles, q);
	}
	
	
	void run() throws Exception
	{
		is = INPUT.isEmpty() ? System.in : new ByteArrayInputStream(INPUT.getBytes());
		out = new PrintWriter(System.out);
		
		long s = System.currentTimeMillis();
		solve();
		out.flush();
		if(!INPUT.isEmpty())tr(System.currentTimeMillis()-s+"ms");
//		Thread t = new Thread(null, null, "~", Runtime.getRuntime().maxMemory()){
//			@Override
//			public void run() {
//				long s = System.currentTimeMillis();
//				solve();
//				out.flush();
//				if(!INPUT.isEmpty())tr(System.currentTimeMillis()-s+"ms");
//			}
//		};
//		t.start();
//		t.join();
	}
	
	public static void main(String[] args) throws Exception { new E().run(); }
	
	private byte[] inbuf = new byte[1024];
	public int lenbuf = 0, ptrbuf = 0;
	
	private int readByte()
	{
		if(lenbuf == -1)throw new InputMismatchException();
		if(ptrbuf >= lenbuf){
			ptrbuf = 0;
			try { lenbuf = is.read(inbuf); } catch (IOException e) { throw new InputMismatchException(); }
			if(lenbuf <= 0)return -1;
		}
		return inbuf[ptrbuf++];
	}
	
	private boolean isSpaceChar(int c) { return !(c >= 33 && c <= 126); }
	private int skip() { int b; while((b = readByte()) != -1 && isSpaceChar(b)); return b; }
	
	private double nd() { return Double.parseDouble(ns()); }
	private char nc() { return (char)skip(); }
	
	private String ns()
	{
		int b = skip();
		StringBuilder sb = new StringBuilder();
		while(!(isSpaceChar(b))){ // when nextLine, (isSpaceChar(b) && b != ' ')
			sb.appendCodePoint(b);
			b = readByte();
		}
		return sb.toString();
	}
	
	private char[] ns(int n)
	{
		char[] buf = new char[n];
		int b = skip(), p = 0;
		while(p < n && !(isSpaceChar(b))){
			buf[p++] = (char)b;
			b = readByte();
		}
		return n == p ? buf : Arrays.copyOf(buf, p);
	}
	
	private int[] na(int n)
	{
		int[] a = new int[n];
		for(int i = 0;i < n;i++)a[i] = ni();
		return a;
	}
	
	private long[] nal(int n)
	{
		long[] a = new long[n];
		for(int i = 0;i < n;i++)a[i] = nl();
		return a;
	}
	
	private char[][] nm(int n, int m) {
		char[][] map = new char[n][];
		for(int i = 0;i < n;i++)map[i] = ns(m);
		return map;
	}
	
	private int[][] nmi(int n, int m) {
		int[][] map = new int[n][];
		for(int i = 0;i < n;i++)map[i] = na(m);
		return map;
	}
	
	private int ni() { return (int)nl(); }
	
	private long nl()
	{
		long num = 0;
		int b;
		boolean minus = false;
		while((b = readByte()) != -1 && !((b >= '0' && b <= '9') || b == '-'));
		if(b == '-'){
			minus = true;
			b = readByte();
		}
		
		while(true){
			if(b >= '0' && b <= '9'){
				num = num * 10 + (b - '0');
			}else{
				return minus ? -num : num;
			}
			b = readByte();
		}
	}
	
	private static void tr(Object... o) { System.out.println(Arrays.deepToString(o)); }
}

yukicoder

結果

テストケース

ソースコード