結果
問題 | No.346 チワワ数え上げ問題 |
ユーザー | nCk_cv |
提出日時 | 2016-07-12 03:05:45 |
言語 | Java21 (openjdk 21) |
結果 |
AC
|
実行時間 | 230 ms / 2,000 ms |
コード長 | 3,516 bytes |
コンパイル時間 | 2,321 ms |
コンパイル使用メモリ | 77,884 KB |
実行使用メモリ | 45,692 KB |
最終ジャッジ日時 | 2024-10-14 14:11:05 |
合計ジャッジ時間 | 5,317 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge4 |
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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 | 49 ms
36,980 KB |
testcase_01 | AC | 47 ms
36,720 KB |
testcase_02 | AC | 46 ms
36,960 KB |
testcase_03 | AC | 46 ms
36,828 KB |
testcase_04 | AC | 46 ms
36,952 KB |
testcase_05 | AC | 46 ms
36,608 KB |
testcase_06 | AC | 47 ms
36,960 KB |
testcase_07 | AC | 47 ms
36,968 KB |
testcase_08 | AC | 49 ms
36,828 KB |
testcase_09 | AC | 48 ms
36,792 KB |
testcase_10 | AC | 126 ms
42,336 KB |
testcase_11 | AC | 115 ms
40,748 KB |
testcase_12 | AC | 123 ms
41,504 KB |
testcase_13 | AC | 116 ms
40,560 KB |
testcase_14 | AC | 50 ms
36,632 KB |
testcase_15 | AC | 124 ms
41,268 KB |
testcase_16 | AC | 127 ms
42,000 KB |
testcase_17 | AC | 128 ms
42,096 KB |
testcase_18 | AC | 129 ms
42,356 KB |
testcase_19 | AC | 127 ms
41,560 KB |
testcase_20 | AC | 200 ms
45,336 KB |
testcase_21 | AC | 230 ms
45,692 KB |
testcase_22 | AC | 200 ms
44,908 KB |
testcase_23 | AC | 45 ms
36,836 KB |
testcase_24 | AC | 45 ms
36,872 KB |
testcase_25 | AC | 46 ms
36,524 KB |
ソースコード
import java.io.*; import java.math.*; import java.util.*; import java.util.Map.Entry; class Main { static int[] vy = {1,0,-1,0}; static int[] vx = {0,1,0,-1}; static long mod = 1000000007; static HashMap<String,Boolean> map = new HashMap<String,Boolean>(); public static void main(String[] args) { FastScanner sc = new FastScanner(); //Scanner sc = new Scanner(System.in); char[] s = sc.next().toCharArray(); int[] sum = new int[s.length]; for(int i = s.length-1; i > 0; i--) { if(s[i] == 'w') sum[i]++; sum[i-1] = sum[i]; } BigInteger bi = new BigInteger("0"); for(int i = 0; i < s.length; i++) { if(s[i] == 'c') { bi = bi.add(new BigInteger(String.valueOf(sum[i])).multiply(new BigInteger(String.valueOf(sum[i]-1))).divide(new BigInteger("2"))); } } System.out.println(bi.toString(10)); } static 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() { if (!hasNext()) throw new NoSuchElementException(); int 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(); } } } }