結果
問題 | No.1695 Mirror Mirror |
ユーザー | tokusakurai |
提出日時 | 2021-10-01 22:22:00 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 48 ms / 2,000 ms |
コード長 | 6,240 bytes |
コンパイル時間 | 1,999 ms |
コンパイル使用メモリ | 209,180 KB |
実行使用メモリ | 10,560 KB |
最終ジャッジ日時 | 2024-06-09 11:17:38 |
合計ジャッジ時間 | 4,239 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge1 |
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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 | 2 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 1 ms
5,376 KB |
testcase_04 | AC | 1 ms
5,376 KB |
testcase_05 | AC | 1 ms
5,376 KB |
testcase_06 | AC | 2 ms
5,376 KB |
testcase_07 | AC | 2 ms
5,376 KB |
testcase_08 | AC | 1 ms
5,376 KB |
testcase_09 | AC | 1 ms
5,376 KB |
testcase_10 | AC | 1 ms
5,376 KB |
testcase_11 | AC | 1 ms
5,376 KB |
testcase_12 | AC | 2 ms
5,376 KB |
testcase_13 | AC | 2 ms
5,376 KB |
testcase_14 | AC | 1 ms
5,376 KB |
testcase_15 | AC | 2 ms
5,376 KB |
testcase_16 | AC | 1 ms
5,376 KB |
testcase_17 | AC | 1 ms
5,376 KB |
testcase_18 | AC | 2 ms
5,376 KB |
testcase_19 | AC | 2 ms
5,376 KB |
testcase_20 | AC | 1 ms
5,376 KB |
testcase_21 | AC | 48 ms
10,380 KB |
testcase_22 | AC | 33 ms
10,380 KB |
testcase_23 | AC | 21 ms
10,116 KB |
testcase_24 | AC | 30 ms
10,244 KB |
testcase_25 | AC | 9 ms
8,544 KB |
testcase_26 | AC | 2 ms
5,376 KB |
testcase_27 | AC | 2 ms
5,376 KB |
testcase_28 | AC | 3 ms
5,376 KB |
testcase_29 | AC | 1 ms
5,376 KB |
testcase_30 | AC | 12 ms
8,548 KB |
testcase_31 | AC | 15 ms
10,100 KB |
testcase_32 | AC | 5 ms
5,376 KB |
testcase_33 | AC | 20 ms
10,348 KB |
testcase_34 | AC | 10 ms
6,616 KB |
testcase_35 | AC | 18 ms
9,420 KB |
testcase_36 | AC | 20 ms
10,400 KB |
testcase_37 | AC | 9 ms
6,484 KB |
testcase_38 | AC | 22 ms
9,712 KB |
testcase_39 | AC | 7 ms
6,108 KB |
testcase_40 | AC | 28 ms
9,632 KB |
testcase_41 | AC | 39 ms
10,532 KB |
testcase_42 | AC | 12 ms
10,392 KB |
testcase_43 | AC | 9 ms
8,428 KB |
testcase_44 | AC | 9 ms
9,056 KB |
testcase_45 | AC | 8 ms
8,276 KB |
testcase_46 | AC | 23 ms
8,728 KB |
testcase_47 | AC | 14 ms
8,884 KB |
testcase_48 | AC | 17 ms
10,476 KB |
testcase_49 | AC | 32 ms
10,560 KB |
testcase_50 | AC | 4 ms
5,376 KB |
testcase_51 | AC | 4 ms
5,376 KB |
testcase_52 | AC | 3 ms
5,376 KB |
testcase_53 | AC | 3 ms
5,376 KB |
testcase_54 | AC | 3 ms
5,376 KB |
testcase_55 | AC | 9 ms
8,340 KB |
testcase_56 | AC | 9 ms
8,968 KB |
testcase_57 | AC | 12 ms
8,528 KB |
testcase_58 | AC | 10 ms
9,544 KB |
testcase_59 | AC | 9 ms
8,924 KB |
testcase_60 | AC | 9 ms
8,396 KB |
testcase_61 | AC | 6 ms
6,144 KB |
testcase_62 | AC | 10 ms
9,988 KB |
testcase_63 | AC | 15 ms
10,396 KB |
testcase_64 | AC | 1 ms
5,376 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; #define rep(i, n) for (int i = 0; i < n; i++) #define rep2(i, x, n) for (int i = x; i <= n; i++) #define rep3(i, x, n) for (int i = x; i >= n; i--) #define each(e, v) for (auto &e : v) #define pb push_back #define eb emplace_back #define all(x) x.begin(), x.end() #define rall(x) x.rbegin(), x.rend() #define sz(x) (int)x.size() using ll = long long; using pii = pair<int, int>; using pil = pair<int, ll>; using pli = pair<ll, int>; using pll = pair<ll, ll>; template <typename T> bool chmax(T &x, const T &y) { return (x < y) ? (x = y, true) : false; } template <typename T> bool chmin(T &x, const T &y) { return (x > y) ? (x = y, true) : false; } template <typename T> int flg(T x, int i) { return (x >> i) & 1; } template <typename T> void print(const vector<T> &v, T x = 0) { int n = v.size(); for (int i = 0; i < n; i++) cout << v[i] + x << (i == n - 1 ? '\n' : ' '); } template <typename T> void printn(const vector<T> &v, T x = 0) { int n = v.size(); for (int i = 0; i < n; i++) cout << v[i] + x << '\n'; } template <typename T> int lb(const vector<T> &v, T x) { return lower_bound(begin(v), end(v), x) - begin(v); } template <typename T> int ub(const vector<T> &v, T x) { return upper_bound(begin(v), end(v), x) - begin(v); } template <typename T> void rearrange(vector<T> &v) { sort(begin(v), end(v)); v.erase(unique(begin(v), end(v)), end(v)); } template <typename T> vector<int> id_sort(const vector<T> &v, bool greater = false) { int n = v.size(); vector<int> ret(n); iota(begin(ret), end(ret), 0); sort(begin(ret), end(ret), [&](int i, int j) { return greater ? v[i] > v[j] : v[i] < v[j]; }); return ret; } struct io_setup { io_setup() { ios_base::sync_with_stdio(false); cin.tie(NULL); cout << fixed << setprecision(15); } } io_setup; const int inf = (1 << 30) - 1; const ll INF = (1LL << 60) - 1; const int MOD = 1000000007; // const int MOD = 998244353; template <typename Monoid> struct Segment_Tree { using F = function<Monoid(Monoid, Monoid)>; int n; vector<Monoid> seg; const F f; const Monoid e1; // f(f(a,b),c) = f(a,f(b,c)), f(e1,a) = f(a,e1) = a Segment_Tree(const vector<Monoid> &v, const F &f, const Monoid &e1) : f(f), e1(e1) { int m = v.size(); n = 1; while (n < m) n <<= 1; seg.assign(2 * n, e1); copy(begin(v), end(v), seg.begin() + n); for (int i = n - 1; i > 0; i--) seg[i] = f(seg[2 * i], seg[2 * i + 1]); } Segment_Tree(int m, const Monoid &x, const F &f, const Monoid &e1) : f(f), e1(e1) { n = 1; while (n < m) n <<= 1; seg.assign(2 * n, e1); vector<Monoid> v(m, x); copy(begin(v), end(v), begin(seg) + n); for (int i = n - 1; i > 0; i--) seg[i] = f(seg[2 * i], seg[2 * i + 1]); } void change(int i, const Monoid &x, bool update = true) { if (update) { seg[i + n] = x; } else { seg[i + n] = f(seg[i + n], x); } i += n; while (i >>= 1) { seg[i] = f(seg[2 * i], seg[2 * i + 1]); } } Monoid query(int l, int r) const { Monoid L = e1, R = e1; l += n, r += n; while (l < r) { if (l & 1) L = f(L, seg[l++]); if (r & 1) R = f(seg[--r], R); l >>= 1, r >>= 1; } return f(L, R); } Monoid operator[](int i) const { return seg[n + i]; } template <typename C> int find_subtree(int i, const C &check, const Monoid &x, Monoid &M, bool type) const { while (i < n) { Monoid nxt = type ? f(seg[2 * i + type], M) : f(M, seg[2 * i + type]); if (check(nxt, x)) { i = 2 * i + type; } else { M = nxt, i = 2 * i + (type ^ 1); } } return i - n; } template <typename C> int find_first(int l, const C &check, const Monoid &x) const { // check((区間[l,r]での演算結果), x)を満たす最小のr Monoid L = e1; int a = l + n, b = n + n; while (a < b) { if (a & 1) { Monoid nxt = f(L, seg[a]); if (check(nxt, x)) return find_subtree(a, check, x, L, false); L = nxt, a++; } a >>= 1, b >>= 1; } return n; } template <typename C> int find_last(int r, const C &check, const Monoid &x) const { // check((区間[l,r)での演算結果), x)を満たす最大のl Monoid R = e1; int a = n, b = r + n; while (a < b) { if (b & 1 || a == 1) { Monoid nxt = f(seg[--b], R); if (check(nxt, x)) return find_subtree(b, check, x, R, true); R = nxt; } a >>= 1, b >>= 1; } return -1; } }; template <typename T> vector<int> manachar(const T &s) { int n = s.size(); vector<int> ret(n); int i = 0, j = 0; while (i < n) { while (i - j >= 0 && i + j < n && s[i - j] == s[i + j]) j++; ret[i] = j; int k = 1; while (i - k >= 0 && k + ret[i - k] < j) ret[i + k] = ret[i - k], k++; i += k, j -= k; } return ret; } int main() { int N, M; string S, T; cin >> N >> M >> S >> T; string X = T; reverse(all(X)); if (M & 1 || T != X) { cout << "-1\n"; return 0; } M /= 2; string U; U += T[0]; rep2(i, 1, M - 1) { U += '_'; U += T[i]; } vector<int> c = manachar(U); // print(c); auto f = [](int a, int b) { return min(a, b); }; Segment_Tree<int> seg(M, inf, f, inf); seg.change(M - 1, 1); rep3(i, M - 2, 0) { int x = seg.query(i + 1, i + c[2 * i + 1] / 2 + 1); if (x != inf) seg.change(i, x + 1); } // rep(i, M) cout << seg[i] << ' '; // cout << '\n'; int ans = inf; rep(i, M) { if (i == N || S[i] != T[i]) break; chmin(ans, seg[i]); } rep(i, M) { if (i == N || S[N - 1 - i] != T[i]) break; chmin(ans, seg[i]); } cout << (ans == inf ? -1 : ans) << '\n'; }