結果
問題 | No.644 G L C C D M |
ユーザー | yuya178 |
提出日時 | 2018-02-03 00:56:10 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 75 ms / 2,000 ms |
コード長 | 3,987 bytes |
コンパイル時間 | 2,755 ms |
コンパイル使用メモリ | 80,360 KB |
実行使用メモリ | 38,792 KB |
最終ジャッジ日時 | 2024-06-10 01:39:29 |
合計ジャッジ時間 | 5,158 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge5 |
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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 | 70 ms
38,400 KB |
testcase_01 | AC | 59 ms
37,484 KB |
testcase_02 | AC | 69 ms
38,384 KB |
testcase_03 | AC | 62 ms
37,972 KB |
testcase_04 | AC | 59 ms
37,896 KB |
testcase_05 | AC | 67 ms
37,724 KB |
testcase_06 | AC | 60 ms
38,100 KB |
testcase_07 | AC | 69 ms
38,272 KB |
testcase_08 | AC | 68 ms
38,032 KB |
testcase_09 | AC | 70 ms
38,280 KB |
testcase_10 | AC | 58 ms
37,744 KB |
testcase_11 | AC | 71 ms
38,784 KB |
testcase_12 | AC | 60 ms
38,392 KB |
testcase_13 | AC | 57 ms
37,860 KB |
testcase_14 | AC | 68 ms
38,320 KB |
testcase_15 | AC | 57 ms
37,712 KB |
testcase_16 | AC | 67 ms
38,412 KB |
testcase_17 | AC | 59 ms
38,532 KB |
testcase_18 | AC | 64 ms
38,648 KB |
testcase_19 | AC | 56 ms
37,640 KB |
testcase_20 | AC | 68 ms
38,384 KB |
testcase_21 | AC | 61 ms
38,636 KB |
testcase_22 | AC | 66 ms
38,396 KB |
testcase_23 | AC | 63 ms
38,656 KB |
testcase_24 | AC | 75 ms
38,776 KB |
testcase_25 | AC | 62 ms
38,792 KB |
testcase_26 | AC | 61 ms
38,152 KB |
ソースコード
import java.io.*; import java.util.*; import java.math.*; // import java.awt.Point; public class Main { InputStream is; PrintWriter out; String INPUT = ""; long mod = 1_000_000_007; long inf = Long.MAX_VALUE; long sum = 0; void solve(){ int n = ni(); int m = ni(); long res = 0; long[] e = EulerPhi(); for(int i = 2; i <= n/m; i++){ res += 2*e[i]; res %= mod; } for(long i = 1; i <= n-2; i++){ res *= i; res %= mod; } out.println(res); } long[] EulerPhi(){ int n = 100001; long[] e = new long[n]; for(int i = 0; i < n; i++) e[i] = i; for(int i = 2; i < n; i++){ if(e[i]==i){ for(int j = i; j < n; j+=i){ e[j] = e[j] / i * (i-1); } } } return e; } 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"); } public static void main(String[] args) throws Exception { new Main().run(); } private byte[] inbuf = new byte[1024]; private 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) && 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 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[] na(int n) { int[] a = new int[n]; for(int i = 0;i < n;i++)a[i] = ni(); return a; } private int ni() { int num = 0, 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 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)); } }