結果

問題 No.1201 お菓子配り-4
ユーザー uwiuwi
提出日時 2020-08-28 21:59:45
言語 Java21
(openjdk 21)
結果
AC  
実行時間 2,757 ms / 4,000 ms
コード長 4,180 bytes
コンパイル時間 3,863 ms
コンパイル使用メモリ 84,080 KB
実行使用メモリ 52,252 KB
最終ジャッジ日時 2024-11-14 00:31:44
合計ジャッジ時間 24,721 ms
ジャッジサーバーID
（参考情報） 		judge2 / judge5
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 130 ms
51,936 KB
testcase_01 AC 759 ms
52,048 KB
testcase_02 AC 1,058 ms
52,252 KB
testcase_03 AC 560 ms
52,220 KB
testcase_04 AC 321 ms
51,952 KB
testcase_05 AC 660 ms
52,088 KB
testcase_06 AC 167 ms
52,040 KB
testcase_07 AC 339 ms
51,868 KB
testcase_08 AC 811 ms
52,080 KB
testcase_09 AC 620 ms
52,124 KB
testcase_10 AC 79 ms
51,124 KB
testcase_11 AC 232 ms
52,168 KB
testcase_12 AC 1,186 ms
52,168 KB
testcase_13 AC 97 ms
51,280 KB
testcase_14 AC 82 ms
51,284 KB
testcase_15 AC 954 ms
52,052 KB
testcase_16 AC 357 ms
52,084 KB
testcase_17 AC 420 ms
51,900 KB
testcase_18 AC 137 ms
51,944 KB
testcase_19 AC 136 ms
52,064 KB
testcase_20 AC 52 ms
49,996 KB
testcase_21 AC 51 ms
50,100 KB
testcase_22 AC 52 ms
50,488 KB
testcase_23 AC 53 ms
50,384 KB
testcase_24 AC 53 ms
49,984 KB
testcase_25 AC 53 ms
50,388 KB
testcase_26 AC 52 ms
49,972 KB
testcase_27 AC 52 ms
50,128 KB
testcase_28 AC 51 ms
50,064 KB
testcase_29 AC 52 ms
50,328 KB
testcase_30 AC 1,471 ms
52,176 KB
testcase_31 AC 1,473 ms
51,940 KB
testcase_32 AC 1,480 ms
52,024 KB
testcase_33 AC 1,467 ms
51,856 KB
testcase_34 AC 1,480 ms
52,200 KB
testcase_35 AC 2,757 ms
51,908 KB
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ソースコード

diff # 

package contest200828;
import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.InputMismatchException;

public class D2 {
	InputStream is;
	PrintWriter out;
	String INPUT = "";
	
	void solve()
	{
		int n = ni(), m = ni();
		int[] a = na(n);
		int[] b = na(m);
		// sum_i sum_j sum_{k=1}^b[j] 2[a[i]*k/b[j]]
		long s = 0;
		long big = 8L*mod*mod;
		for(int v : a){
			for(int w : b){
				s += sumFloorFraction(v, w, w+1);
				if(s >= big)s -= big;
			}
		}
		s = s % mod * 2 % mod;
		if(s < 0)s += mod;
		out.println(s);
	}
	
	public static long gcd(long a, long b) {
		while (b > 0) {
			long c = a;
			a = b;
			b = c % b;
		}
		return a;
	}
	
	
	static int mod = 1000000007;
	
	public static long sumFloorFraction(long a, long b, long n)
	{
		if(b == 0)throw new ArithmeticException();
		if(a == 0 || n == 0)return 0L;
		
		// gcd(a,b)=1
		long g = gcd(a, b);
		a /= g; b /= g;
		long S = 0;
		
		while(a != 0 && n != 0){
			if(a >= b){
				S += a/b*(n*(n-1)/2);
				a %= b;
				if(a == 0)break;
			}
			if(n >= b){
				S += (n/b)*(n/b-1)/2*a*b + (a-1)*(b-1)/2*(n/b) + (n/b)*a*(n%b); // under_block + diagonal_block + last_under_block
				n %= b;
				if(n == 0)break;
			}
			
			// TODO
			S += (b-1)*(a-1)/2-(b-n)*(a*(n-1)/b); // all-rectangle
			n = a-a*(n-1)/b;
			long d = a; a = b; b = d;
			S = -S; // flipped from then on
		}
		return Math.abs(S);
	}

	
	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 D2().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)); }
}
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