結果
問題 | No.25 有限小数 |
ユーザー | 37zigen |
提出日時 | 2020-03-26 04:31:35 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 126 ms / 5,000 ms |
コード長 | 3,275 bytes |
コンパイル時間 | 2,689 ms |
コンパイル使用メモリ | 79,212 KB |
実行使用メモリ | 41,600 KB |
最終ジャッジ日時 | 2024-06-10 12:06:56 |
合計ジャッジ時間 | 6,598 ms |
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
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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 | 113 ms
41,352 KB |
testcase_01 | AC | 114 ms
41,492 KB |
testcase_02 | AC | 110 ms
41,108 KB |
testcase_03 | AC | 116 ms
41,588 KB |
testcase_04 | AC | 111 ms
41,200 KB |
testcase_05 | AC | 111 ms
41,088 KB |
testcase_06 | AC | 111 ms
41,192 KB |
testcase_07 | AC | 107 ms
40,860 KB |
testcase_08 | AC | 118 ms
41,276 KB |
testcase_09 | AC | 121 ms
41,084 KB |
testcase_10 | AC | 98 ms
39,964 KB |
testcase_11 | AC | 102 ms
40,708 KB |
testcase_12 | AC | 110 ms
40,880 KB |
testcase_13 | AC | 100 ms
40,352 KB |
testcase_14 | AC | 111 ms
41,340 KB |
testcase_15 | AC | 120 ms
41,228 KB |
testcase_16 | AC | 117 ms
41,020 KB |
testcase_17 | AC | 103 ms
39,888 KB |
testcase_18 | AC | 105 ms
40,268 KB |
testcase_19 | AC | 115 ms
41,056 KB |
testcase_20 | AC | 101 ms
39,956 KB |
testcase_21 | AC | 113 ms
41,296 KB |
testcase_22 | AC | 117 ms
41,240 KB |
testcase_23 | AC | 126 ms
41,080 KB |
testcase_24 | AC | 120 ms
41,600 KB |
testcase_25 | AC | 123 ms
41,464 KB |
testcase_26 | AC | 107 ms
40,120 KB |
testcase_27 | AC | 119 ms
41,088 KB |
testcase_28 | AC | 109 ms
41,360 KB |
testcase_29 | AC | 97 ms
39,908 KB |
testcase_30 | AC | 112 ms
40,932 KB |
ソースコード
import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStream; import java.math.BigInteger; import java.util.Arrays; import java.util.NoSuchElementException; import java.util.Scanner; public class Main { public static void main(String[] args) throws FileNotFoundException { long t = System.currentTimeMillis(); new Main().run(); System.err.println(System.currentTimeMillis() - t); } void run() { Scanner sc = new Scanner(System.in); BigInteger N=new BigInteger(sc.next()); BigInteger M=new BigInteger(sc.next()); BigInteger gcd=N.gcd(M); N=N.divide(gcd); M=M.divide(gcd); int c5=0,c2=0; while(M.mod(BigInteger.valueOf(5)).equals(BigInteger.ZERO)) { M=M.divide(BigInteger.valueOf(5)); ++c5; } while(M.mod(BigInteger.valueOf(2)).equals(BigInteger.ZERO)) { M=M.divide(BigInteger.valueOf(2)); ++c2; } if(M.compareTo(BigInteger.ONE)==1) { System.out.println(-1); return; }else { if(c2>c5) { N=N.multiply(BigInteger.valueOf(5).pow(c2-c5)); }else { N=N.multiply(BigInteger.valueOf(2).pow(c5-c2)); } } char[] cs=N.toString().toCharArray(); int p=cs.length-1; while(cs[p]=='0')--p; System.out.println(cs[p]); } static 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(); } }