結果
| 問題 |
No.263 Common Palindromes Extra
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2019-04-26 03:41:14 |
| 言語 | D (dmd 2.109.1) |
| 結果 |
MLE
|
| 実行時間 | - |
| コード長 | 3,455 bytes |
| コンパイル時間 | 2,041 ms |
| コンパイル使用メモリ | 165,548 KB |
| 実行使用メモリ | 215,464 KB |
| 最終ジャッジ日時 | 2024-06-22 00:55:35 |
| 合計ジャッジ時間 | 4,867 ms |
|
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 5 MLE * 7 |
ソースコード
import std.conv, std.functional, std.stdio, std.string;
import std.algorithm, std.array, std.bigint, std.complex, std.container, std.math, std.numeric, std.range, std.regex, std.typecons;
import core.bitop;
class EOFException : Throwable { this() { super("EOF"); } }
string[] tokens;
string readToken() { for (; tokens.empty; ) { if (stdin.eof) { throw new EOFException; } tokens = readln.split; } auto token = tokens.front; tokens.popFront; return token; }
int readInt() { return readToken.to!int; }
long readLong() { return readToken.to!long; }
real readReal() { return readToken.to!real; }
bool chmin(T)(ref T t, in T f) { if (t > f) { t = f; return true; } else { return false; } }
bool chmax(T)(ref T t, in T f) { if (t < f) { t = f; return true; } else { return false; } }
int binarySearch(alias pred, T)(in T[] as) { int lo = -1, hi = cast(int)(as.length); for (; lo + 1 < hi; ) { const mid = (lo + hi) >> 1; (unaryFun!pred(as[mid]) ? hi : lo) = mid; } return hi; }
int lowerBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a >= val)); }
int upperBound(T)(in T[] as, T val) { return as.binarySearch!(a => (a > val)); }
class Eertree {
string a;
int n;
int[] us, len, fail;
int[][] next;
this(in string a, int alphabetSize, char offset) {
this.a = a;
n = cast(int)(a.length);
us = new int[n + 3];
len = new int[n + 3];
fail = new int[n + 3];
next = new int[][](n + 3, alphabetSize);
us[1] = 1; len[1] = -1; fail[1] = 1;
us[2] = 2; len[2] = 0; fail[2] = 1;
foreach (i; 0 .. n) {
const c = a[i] - offset;
int u = us[i + 2];
for (; !isSuffix(i, u); u = fail[u]) {}
if (!next[u][c]) {
next[u][c] = i + 3;
len[i + 3] = len[u] + 2;
if (u == 1) {
fail[i + 3] = 2;
} else {
int v = fail[u];
for (; !isSuffix(i, v); v = fail[v]) {}
fail[i + 3] = next[v][c];
}
}
us[i + 3] = next[u][c];
}
}
bool isSuffix(int i, int u) const {
const j = i - 1 - len[u];
return (j >= 0 && a[j] == a[i]);
}
void print() const {
void dfs(int u, string prefix, int type) {
writefln("%s%s%s %s %s", prefix, ["", "|-- ", "`-- "][type],
(len[u] <= 0) ? ("(" ~ len[u].to!string ~ ")")
: a[u - 2 - len[u] .. u - 2],
u, fail[u]);
const vs = next[u].filter!(v => v).array;
foreach (v; vs) {
dfs(v, prefix ~ ["", "| ", " "][type], (v == vs[$ - 1]) ? 2 : 1);
}
}
dfs(1, "", 0);
dfs(2, " ", 0);
}
}
string S, T;
void main() {
try {
for (; ; ) {
S = readToken();
T = readToken();
const U = S ~ "?@" ~ T;
auto eertree = new Eertree(U, 28, '?');
debug {
eertree.print;
}
const n = cast(int)(U.length);
const m = cast(int)(S.length);
auto cnt = new long[][](n + 3, 2);
foreach (i; 0 .. m) {
++cnt[eertree.us[i + 3]][0];
}
foreach (i; m + 2 .. n) {
++cnt[eertree.us[i + 3]][1];
}
foreach_reverse (u; 1 .. n + 3) {
if (eertree.us[u] == u) {
foreach (j; 0 .. 2) {
cnt[eertree.fail[u]][j] += cnt[u][j];
}
}
}
long ans;
foreach (u; 3 .. n + 3) {
if (eertree.us[u] == u) {
ans += cnt[u][0] * cnt[u][1];
}
}
writeln(ans);
}
} catch (EOFException e) {
}
}