結果
| 問題 |
No.2020 Sum of Common Prefix Length
|
| コンテスト | |
| ユーザー |
|
| 提出日時 | 2022-07-22 21:51:50 |
| 言語 | D (dmd 2.109.1) |
| 結果 |
AC
|
| 実行時間 | 348 ms / 2,000 ms |
| コード長 | 3,679 bytes |
| コンパイル時間 | 1,069 ms |
| コンパイル使用メモリ | 122,184 KB |
| 実行使用メモリ | 69,268 KB |
| 最終ジャッジ日時 | 2024-06-22 15:51:17 |
| 合計ジャッジ時間 | 12,840 ms |
|
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 38 |
ソースコード
import std.conv, std.functional, std.range, std.stdio, std.string;
import std.algorithm, std.array, std.bigint, std.bitmanip, std.complex, std.container, std.math, std.mathspecial, std.numeric, 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)); }
void bAdd(T)(T[] bit, int pos, T val)
in {
assert(0 <= pos && pos < bit.length, "bAdd: 0 <= pos < |bit| must hold");
}
do {
for (int x = pos; x < bit.length; x |= x + 1) {
bit[x] += val;
}
}
// sum of [0, pos)
T bSum(T)(T[] bit, int pos)
in {
assert(0 <= pos && pos <= bit.length, "bSum: 0 <= pos <= |bit| must hold");
}
do {
T ret = 0;
for (int x = pos - 1; x >= 0; x = (x & (x + 1)) - 1) {
ret += bit[x];
}
return ret;
}
enum E = 26;
int V;
int[][] nxt;
int zeit;
int[] dis, fin;
void dfs(int u) {
dis[u] = zeit++;
foreach (e; 0 .. E) {
const v = nxt[u][e];
if (~v) {
dfs(v);
}
}
fin[u] = zeit++;
}
void main() {
try {
for (; ; ) {
const N = readInt;
auto S = new string[N];
foreach (i; 0 .. N) {
S[i] = readToken;
}
const Q = readInt;
auto O = new int[Q];
auto X = new int[Q];
auto C = new char[Q];
foreach (q; 0 .. Q) {
O[q] = readInt;
X[q] = readInt - 1;
if (O[q] == 1) {
C[q] = readToken[0];
}
}
auto L = new int[N];
foreach (i; 0 .. N) {
L[i] = cast(int)(S[i].length);
}
foreach (q; 0 .. Q) if (O[q] == 1) {
S[X[q]] ~= C[q];
}
debug {
writeln("S = ", S);
}
{
int sumLen = 1;
foreach (i; 0 .. N) {
sumLen += cast(int)(S[i].length);
}
nxt = new int[][](sumLen, E);
foreach (u; 0 .. sumLen) {
nxt[u][] = -1;
}
}
V = 1;
foreach (i; 0 .. N) {
int u;
foreach (s; S[i]) {
const e = s - 'a';
if (!~nxt[u][e]) nxt[u][e] = V++;
u = nxt[u][e];
}
}
zeit = 0;
dis = new int[V];
fin = new int[V];
dfs(0);
debug {
writeln("dis = ", dis);
writeln("fin = ", fin);
}
auto bit = new long[2 * V];
auto js = new int[N];
auto us = new int[N];
void adv(int i) {
const e = S[i][js[i]++] - 'a';
us[i] = nxt[us[i]][e];
bit.bAdd(dis[us[i]], +1);
bit.bAdd(fin[us[i]], -1);
}
foreach (i; 0 .. N) {
for (; js[i] < L[i]; ) {
adv(i);
}
}
foreach (q; 0 .. Q) {
if (O[q] == 1) {
adv(X[q]);
} else {
const ans = bit.bSum(dis[us[X[q]]] + 1);
writeln(ans);
}
}
}
} catch (EOFException e) {
}
}