結果
問題 | No.1695 Mirror Mirror |
ユーザー | Sumitacchan |
提出日時 | 2021-10-01 23:45:24 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 134 ms / 2,000 ms |
コード長 | 4,713 bytes |
コンパイル時間 | 2,012 ms |
コンパイル使用メモリ | 208,448 KB |
実行使用メモリ | 22,816 KB |
最終ジャッジ日時 | 2024-06-09 11:18:16 |
合計ジャッジ時間 | 6,460 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 | 1 ms
5,248 KB |
testcase_01 | AC | 1 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 | 2 ms
5,376 KB |
testcase_06 | AC | 2 ms
5,376 KB |
testcase_07 | AC | 1 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 | 1 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 | 2 ms
5,376 KB |
testcase_17 | AC | 2 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 | 134 ms
22,744 KB |
testcase_22 | AC | 113 ms
22,816 KB |
testcase_23 | AC | 86 ms
21,752 KB |
testcase_24 | AC | 94 ms
21,572 KB |
testcase_25 | AC | 44 ms
18,092 KB |
testcase_26 | AC | 1 ms
5,376 KB |
testcase_27 | AC | 2 ms
5,376 KB |
testcase_28 | AC | 115 ms
20,648 KB |
testcase_29 | AC | 1 ms
5,376 KB |
testcase_30 | AC | 51 ms
19,072 KB |
testcase_31 | AC | 72 ms
21,520 KB |
testcase_32 | AC | 18 ms
8,192 KB |
testcase_33 | AC | 75 ms
22,628 KB |
testcase_34 | AC | 36 ms
12,908 KB |
testcase_35 | AC | 71 ms
20,480 KB |
testcase_36 | AC | 84 ms
22,120 KB |
testcase_37 | AC | 35 ms
11,724 KB |
testcase_38 | AC | 77 ms
20,592 KB |
testcase_39 | AC | 25 ms
11,256 KB |
testcase_40 | AC | 91 ms
20,880 KB |
testcase_41 | AC | 104 ms
22,072 KB |
testcase_42 | AC | 69 ms
22,300 KB |
testcase_43 | AC | 46 ms
18,424 KB |
testcase_44 | AC | 53 ms
20,440 KB |
testcase_45 | AC | 44 ms
18,072 KB |
testcase_46 | AC | 70 ms
19,816 KB |
testcase_47 | AC | 56 ms
19,252 KB |
testcase_48 | AC | 78 ms
22,664 KB |
testcase_49 | AC | 112 ms
22,508 KB |
testcase_50 | AC | 67 ms
21,760 KB |
testcase_51 | AC | 73 ms
22,468 KB |
testcase_52 | AC | 47 ms
19,052 KB |
testcase_53 | AC | 47 ms
18,804 KB |
testcase_54 | AC | 45 ms
18,520 KB |
testcase_55 | AC | 43 ms
17,808 KB |
testcase_56 | AC | 4 ms
5,376 KB |
testcase_57 | AC | 53 ms
18,704 KB |
testcase_58 | AC | 59 ms
20,884 KB |
testcase_59 | AC | 53 ms
20,404 KB |
testcase_60 | AC | 47 ms
18,116 KB |
testcase_61 | AC | 3 ms
5,376 KB |
testcase_62 | AC | 62 ms
21,468 KB |
testcase_63 | AC | 70 ms
22,312 KB |
testcase_64 | AC | 2 ms
5,376 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; //using namespace atcoder; struct fast_ios { fast_ios(){ cin.tie(0); ios::sync_with_stdio(false); cout << fixed << setprecision(20); }; } fast_ios_; #define FOR(i, begin, end) for(int i=(begin);i<(end);i++) #define REP(i, n) FOR(i,0,n) #define IFOR(i, begin, end) for(int i=(end)-1;i>=(begin);i--) #define IREP(i, n) IFOR(i,0,n) #define Sort(v) sort(v.begin(), v.end()) #define Reverse(v) reverse(v.begin(), v.end()) #define all(v) v.begin(),v.end() #define SZ(v) ((int)v.size()) #define Lower_bound(v, x) distance(v.begin(), lower_bound(v.begin(), v.end(), x)) #define Upper_bound(v, x) distance(v.begin(), upper_bound(v.begin(), v.end(), x)) #define chmax(a, b) a = max(a, b) #define chmin(a, b) a = min(a, b) #define bit(n) (1LL<<(n)) #define debug(x) cout << #x << "=" << x << endl; #define vdebug(v) { cout << #v << "=" << endl; REP(i_debug, (int)v.size()){ cout << v[i_debug] << ","; } cout << endl; } #define mdebug(m) { cout << #m << "=" << endl; REP(i_debug, (int)m.size()){ REP(j_debug, (int)m[i_debug].size()){ cout << m[i_debug][j_debug] << ","; } cout << endl;} } #define pb push_back #define fi first #define se second #define int long long #define INF 1000000000000000000 template<typename T> istream &operator>>(istream &is, vector<T> &v){ for (auto &x : v) is >> x; return is; } template<typename T> ostream &operator<<(ostream &os, vector<T> &v){ for(int i = 0; i < (int)v.size(); i++) { cout << v[i]; if(i != (int)v.size() - 1) cout << endl; }; return os; } template<typename T1, typename T2> ostream &operator<<(ostream &os, pair<T1, T2> p){ cout << '(' << p.first << ',' << p.second << ')'; return os; } template<typename T> void Out(T x) { cout << x << endl; } template<typename T1, typename T2> void chOut(bool f, T1 y, T2 n) { if(f) Out(y); else Out(n); } using vec = vector<int>; using mat = vector<vec>; using Pii = pair<int, int>; using v_bool = vector<bool>; using v_Pii = vector<Pii>; //int dx[4] = {1,0,-1,0}; //int dy[4] = {0,1,0,-1}; //char d[4] = {'D','R','U','L'}; const int mod = 1000000007; //const int mod = 998244353; vector<int> Manacher(string s){ int n = s.size(); vector<int> R(n); int i = 0, j = 0; while(i < n){ while(i - j >= 0 && i + j < n && s[i - j] == s[i + j]) j++; R[i] = j; int k = 1; while(i - k >= 0 && i + k < n && k + R[i - k] < j){ R[i + k] = R[i - k]; k++; } i += k; j -= k; } return R; } string fill_dammy(string s, char d = '@'){ int n = s.size(); string t = ""; t += d; REP(i, n){ t += s[i]; t += d; } return t; } struct SegmentTree { using T = int; int N; vector<T> dat; T id = INF; T F(T &a, T &b) { return min(a, b); } SegmentTree(int n){ N = 1; while(n > N) N = N << 1; dat = vector<T>(2 * N - 1, id); } SegmentTree(int n, vector<T> &v){ N = 1; while(n > N) N = N << 1; dat = vector<T>(2 * N - 1, id); for(int i = 0; i < n; i++) dat[i + N - 1] = v[i]; for(int i = N - 2; i >= 0; i--) dat[i] = F(dat[i * 2 + 1], dat[i * 2 + 2]); } SegmentTree(){} void update(int k, T a){ k += N - 1; dat[k] = a; while(k > 0){ k = (k - 1) / 2; dat[k] = F(dat[k * 2 + 1], dat[k * 2 + 2]); } } void reset() { fill(dat.begin(), dat.end(), id); } T get(int a, int b, int k, int l, int r){ if(r <= a || b <= l) return id; if(a <= l && r <= b) return dat[k]; else{ T vl = get(a, b, k * 2 + 1, l, (l + r) / 2); T vr = get(a, b, k * 2 + 2, (l + r) / 2, r); return F(vl, vr); } } T get(int a, int b) { return get(a, b, 0, 0, N); } T val(int k){ return dat[k + N - 1]; } }; int solve(int N, int M, string S, string T){ int n = 0; while(n < min(N, M) && S[n] == T[n]) n++; if(n == 0) return INF; auto T2 = fill_dammy(T); auto R = Manacher(T2); //debug(T2); vdebug(R); int ans = INF; SegmentTree ST(M + 1); ST.update(M, 0); IFOR(i, 1, M){ int x = 2 * i + R[2 * i]; chmin(x, 2 * M); x /= 2; int tmp = ST.get(i + 1, x + 1) + 1; if(tmp < INF){ ST.update(i, tmp); if(i <= n) chmin(ans, tmp); } } return ans; } signed main(){ int N, M; cin >> N >> M; string S, T; cin >> S >> T; int ans = INF; REP(k, 2){ chmin(ans, solve(N, M, S, T)); if(k == 0){ Reverse(S); Reverse(T); } } chOut(ans < INF, ans, -1); return 0; }