oj.uz

Submission #198106

# Submission time Handle Problem Language Result Execution time Memory
198106 2020-01-24T18:05:21 Z model_code Cubeword (CEOI19_cubeword) C++17
100 / 100
 858 ms 27160 KB 
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#include <bits/stdc++.h>
using namespace std;

class Solver {
	constexpr static unsigned long long MOD = 998244353;
	constexpr static int MAX_L = 10;
	constexpr static int MAX_CHAR_ID = 62;

	vector<string> words[MAX_L+1];

	unsigned char rotations[1<<24];

	inline int encode_char(char c) {
		if(c >= 'a' && c <= 'z')
			return c-'a';
		else if(c >= 'A' && c <= 'Z')
			return c-'A'+26;
		else // if(c >= '0' && c <= '9')
		    return c-'0'+52;
	}

	inline bool unpack(int packed_seq, int * seq) {
		for(int i = 0; i < 4; i++) {
			seq[3-i] = packed_seq & 63;
			if(seq[3-i] >= MAX_CHAR_ID) return false;
			packed_seq >>= 6;
		}
		return true;
	}

	inline int pack(int * seq) {
		int ret = 0;
		for(int i = 0; i < 4; i++) ret = (ret << 6) | seq[i];
		return ret;
	}

	unsigned long long solve(int L) {
		unsigned int cnt_by_end_chars[MAX_CHAR_ID][MAX_CHAR_ID];
		memset(cnt_by_end_chars, 0, sizeof(cnt_by_end_chars));
		set<string> w;
		for(string & word : words[L]) {
		    w.insert(word);
		    reverse(word.begin(), word.end());
		    w.insert(word);
		}
		for(const string & word : w) {
			int start_char_id = encode_char(word[0]);
			int end_char_id = encode_char(word[L-1]);
			cnt_by_end_chars[start_char_id][end_char_id]++;
		}

		unsigned int cnt_by_vertices[MAX_CHAR_ID][MAX_CHAR_ID][MAX_CHAR_ID];
		memset(cnt_by_vertices, 0, sizeof(cnt_by_vertices));
		int seq[4];
		for(int i = 0; i < (1<<18); i++) {
			if(!unpack(i<<6, seq)) continue;
			unsigned long long sum_cnt = 0;
			for(int j = 0; j < MAX_CHAR_ID; j++) {
				unsigned long long cnt = 1;
				for(int k = 0; k < 3; k++)
					cnt = cnt * cnt_by_end_chars[seq[k]][j];
				sum_cnt += cnt;
				if(sum_cnt >= 5*MOD*MOD) sum_cnt -= 5*MOD*MOD;
			}
			cnt_by_vertices[seq[0]][seq[1]][seq[2]] = sum_cnt % MOD;
		}

		unsigned long long ret = 0;
		for(int i = 0; i < (1<<24); i++) if(rotations[i]) {
			if(!unpack(i, seq)) continue;
			unsigned long long cnt = rotations[i];
			int V_seq[3];
			for(int j = 0; j < 3; j++) V_seq[j] = seq[j];
			for(int j = 0; j < 4; j++) {
				cnt = cnt * cnt_by_vertices[V_seq[0]][V_seq[1]][V_seq[2]] % MOD;
				if(j < 3) V_seq[2-j] = seq[3-j];
			}
			ret += cnt;
			if(ret >= MOD) ret -= MOD;
		}

		return ret;
	}

public:
	Solver(vector<string> words_) {
		for(int i = 0; i < (int)words_.size(); i++) {
			string w = words_[i];
			words[w.length()].push_back(w);
		}

		memset(rotations, 0, sizeof(rotations));
		int seq_sorted[4];
		for(int i = 0; i < (1<<24); i++) {
			if(!unpack(i, seq_sorted)) continue;
			for(int j = 0; j < 3; j++) for(int k = 1; k < 4; k++)
				if(seq_sorted[j] > seq_sorted[k]) swap(seq_sorted[j], seq_sorted[k]);
			rotations[pack(seq_sorted)]++;
		}
	}

	unsigned long long solve() {
		unsigned long long ret = 0;
		for(int l = 2; l <= MAX_L; l++) {
			ret += solve(l);
			if(ret >= MOD) ret -= MOD;
		}
		return ret;
	}
};

int main() {
	cin.sync_with_stdio(0);
	int N;
	cin >> N;
	vector<string> words(N);
	for(int i = 0; i < N; i++) cin >> words[i];
	Solver solver(words);
	cout << solver.solve() << "\n";
}

Subtask #1
21.0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 802 ms 27152 KB Output is correct
2 Correct 799 ms 26984 KB Output is correct
3 Correct 798 ms 27136 KB Output is correct
4 Correct 797 ms 27036 KB Output is correct
5 Correct 810 ms 27108 KB Output is correct
6 Correct 808 ms 27036 KB Output is correct
7 Correct 792 ms 26976 KB Output is correct
8 Correct 789 ms 27068 KB Output is correct
9 Correct 798 ms 27148 KB Output is correct
10 Correct 802 ms 27068 KB Output is correct
11 Correct 805 ms 27028 KB Output is correct
12 Correct 830 ms 27036 KB Output is correct
13 Correct 801 ms 27052 KB Output is correct
14 Correct 796 ms 26964 KB Output is correct
15 Correct 794 ms 27052 KB Output is correct
16 Correct 802 ms 27068 KB Output is correct
17 Correct 794 ms 27160 KB Output is correct
18 Correct 800 ms 27048 KB Output is correct
19 Correct 795 ms 26980 KB Output is correct
20 Correct 802 ms 26992 KB Output is correct
21 Correct 800 ms 27128 KB Output is correct

Subtask #2
29.0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 802 ms 27152 KB Output is correct
2 Correct 799 ms 26984 KB Output is correct
3 Correct 798 ms 27136 KB Output is correct
4 Correct 797 ms 27036 KB Output is correct
5 Correct 810 ms 27108 KB Output is correct
6 Correct 808 ms 27036 KB Output is correct
7 Correct 792 ms 26976 KB Output is correct
8 Correct 789 ms 27068 KB Output is correct
9 Correct 798 ms 27148 KB Output is correct
10 Correct 802 ms 27068 KB Output is correct
11 Correct 805 ms 27028 KB Output is correct
12 Correct 830 ms 27036 KB Output is correct
13 Correct 801 ms 27052 KB Output is correct
14 Correct 796 ms 26964 KB Output is correct
15 Correct 794 ms 27052 KB Output is correct
16 Correct 802 ms 27068 KB Output is correct
17 Correct 794 ms 27160 KB Output is correct
18 Correct 800 ms 27048 KB Output is correct
19 Correct 795 ms 26980 KB Output is correct
20 Correct 802 ms 26992 KB Output is correct
21 Correct 800 ms 27128 KB Output is correct
22 Correct 792 ms 26592 KB Output is correct
23 Correct 790 ms 26308 KB Output is correct
24 Correct 777 ms 26772 KB Output is correct
25 Correct 797 ms 26344 KB Output is correct
26 Correct 792 ms 26236 KB Output is correct
27 Correct 797 ms 26640 KB Output is correct
28 Correct 795 ms 26244 KB Output is correct
29 Correct 795 ms 26564 KB Output is correct
30 Correct 799 ms 26616 KB Output is correct
31 Correct 793 ms 26372 KB Output is correct
32 Correct 790 ms 26304 KB Output is correct
33 Correct 790 ms 26608 KB Output is correct
34 Correct 799 ms 26548 KB Output is correct
35 Correct 799 ms 26316 KB Output is correct
36 Correct 782 ms 26812 KB Output is correct
37 Correct 800 ms 26196 KB Output is correct
38 Correct 786 ms 26392 KB Output is correct
39 Correct 793 ms 26300 KB Output is correct
40 Correct 786 ms 26660 KB Output is correct
41 Correct 790 ms 26300 KB Output is correct
42 Correct 789 ms 26240 KB Output is correct

Subtask #3
34.0 / 34.0

# Verdict Execution time Memory Grader output
1 Correct 802 ms 27152 KB Output is correct
2 Correct 799 ms 26984 KB Output is correct
3 Correct 798 ms 27136 KB Output is correct
4 Correct 797 ms 27036 KB Output is correct
5 Correct 810 ms 27108 KB Output is correct
6 Correct 808 ms 27036 KB Output is correct
7 Correct 792 ms 26976 KB Output is correct
8 Correct 789 ms 27068 KB Output is correct
9 Correct 798 ms 27148 KB Output is correct
10 Correct 802 ms 27068 KB Output is correct
11 Correct 805 ms 27028 KB Output is correct
12 Correct 830 ms 27036 KB Output is correct
13 Correct 801 ms 27052 KB Output is correct
14 Correct 796 ms 26964 KB Output is correct
15 Correct 794 ms 27052 KB Output is correct
16 Correct 802 ms 27068 KB Output is correct
17 Correct 794 ms 27160 KB Output is correct
18 Correct 800 ms 27048 KB Output is correct
19 Correct 795 ms 26980 KB Output is correct
20 Correct 802 ms 26992 KB Output is correct
21 Correct 800 ms 27128 KB Output is correct
22 Correct 792 ms 26592 KB Output is correct
23 Correct 790 ms 26308 KB Output is correct
24 Correct 777 ms 26772 KB Output is correct
25 Correct 797 ms 26344 KB Output is correct
26 Correct 792 ms 26236 KB Output is correct
27 Correct 797 ms 26640 KB Output is correct
28 Correct 795 ms 26244 KB Output is correct
29 Correct 795 ms 26564 KB Output is correct
30 Correct 799 ms 26616 KB Output is correct
31 Correct 793 ms 26372 KB Output is correct
32 Correct 790 ms 26304 KB Output is correct
33 Correct 790 ms 26608 KB Output is correct
34 Correct 799 ms 26548 KB Output is correct
35 Correct 799 ms 26316 KB Output is correct
36 Correct 782 ms 26812 KB Output is correct
37 Correct 800 ms 26196 KB Output is correct
38 Correct 786 ms 26392 KB Output is correct
39 Correct 793 ms 26300 KB Output is correct
40 Correct 786 ms 26660 KB Output is correct
41 Correct 790 ms 26300 KB Output is correct
42 Correct 789 ms 26240 KB Output is correct
43 Correct 790 ms 26576 KB Output is correct
44 Correct 790 ms 26416 KB Output is correct
45 Correct 785 ms 26372 KB Output is correct
46 Correct 794 ms 26328 KB Output is correct
47 Correct 791 ms 26372 KB Output is correct
48 Correct 783 ms 26368 KB Output is correct
49 Correct 780 ms 26612 KB Output is correct
50 Correct 787 ms 26364 KB Output is correct
51 Correct 786 ms 26580 KB Output is correct
52 Correct 785 ms 26380 KB Output is correct
53 Correct 787 ms 26644 KB Output is correct
54 Correct 790 ms 26596 KB Output is correct
55 Correct 791 ms 26412 KB Output is correct
56 Correct 798 ms 26736 KB Output is correct
57 Correct 804 ms 26624 KB Output is correct
58 Correct 792 ms 26328 KB Output is correct
59 Correct 801 ms 26320 KB Output is correct
60 Correct 790 ms 26324 KB Output is correct
61 Correct 791 ms 26300 KB Output is correct
62 Correct 787 ms 26732 KB Output is correct
63 Correct 784 ms 26344 KB Output is correct

Subtask #4
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 802 ms 27152 KB Output is correct
2 Correct 799 ms 26984 KB Output is correct
3 Correct 798 ms 27136 KB Output is correct
4 Correct 797 ms 27036 KB Output is correct
5 Correct 810 ms 27108 KB Output is correct
6 Correct 808 ms 27036 KB Output is correct
7 Correct 792 ms 26976 KB Output is correct
8 Correct 789 ms 27068 KB Output is correct
9 Correct 798 ms 27148 KB Output is correct
10 Correct 802 ms 27068 KB Output is correct
11 Correct 805 ms 27028 KB Output is correct
12 Correct 830 ms 27036 KB Output is correct
13 Correct 801 ms 27052 KB Output is correct
14 Correct 796 ms 26964 KB Output is correct
15 Correct 794 ms 27052 KB Output is correct
16 Correct 802 ms 27068 KB Output is correct
17 Correct 794 ms 27160 KB Output is correct
18 Correct 800 ms 27048 KB Output is correct
19 Correct 795 ms 26980 KB Output is correct
20 Correct 802 ms 26992 KB Output is correct
21 Correct 800 ms 27128 KB Output is correct
22 Correct 792 ms 26592 KB Output is correct
23 Correct 790 ms 26308 KB Output is correct
24 Correct 777 ms 26772 KB Output is correct
25 Correct 797 ms 26344 KB Output is correct
26 Correct 792 ms 26236 KB Output is correct
27 Correct 797 ms 26640 KB Output is correct
28 Correct 795 ms 26244 KB Output is correct
29 Correct 795 ms 26564 KB Output is correct
30 Correct 799 ms 26616 KB Output is correct
31 Correct 793 ms 26372 KB Output is correct
32 Correct 790 ms 26304 KB Output is correct
33 Correct 790 ms 26608 KB Output is correct
34 Correct 799 ms 26548 KB Output is correct
35 Correct 799 ms 26316 KB Output is correct
36 Correct 782 ms 26812 KB Output is correct
37 Correct 800 ms 26196 KB Output is correct
38 Correct 786 ms 26392 KB Output is correct
39 Correct 793 ms 26300 KB Output is correct
40 Correct 786 ms 26660 KB Output is correct
41 Correct 790 ms 26300 KB Output is correct
42 Correct 789 ms 26240 KB Output is correct
43 Correct 790 ms 26576 KB Output is correct
44 Correct 790 ms 26416 KB Output is correct
45 Correct 785 ms 26372 KB Output is correct
46 Correct 794 ms 26328 KB Output is correct
47 Correct 791 ms 26372 KB Output is correct
48 Correct 783 ms 26368 KB Output is correct
49 Correct 780 ms 26612 KB Output is correct
50 Correct 787 ms 26364 KB Output is correct
51 Correct 786 ms 26580 KB Output is correct
52 Correct 785 ms 26380 KB Output is correct
53 Correct 787 ms 26644 KB Output is correct
54 Correct 790 ms 26596 KB Output is correct
55 Correct 791 ms 26412 KB Output is correct
56 Correct 798 ms 26736 KB Output is correct
57 Correct 804 ms 26624 KB Output is correct
58 Correct 792 ms 26328 KB Output is correct
59 Correct 801 ms 26320 KB Output is correct
60 Correct 790 ms 26324 KB Output is correct
61 Correct 791 ms 26300 KB Output is correct
62 Correct 787 ms 26732 KB Output is correct
63 Correct 784 ms 26344 KB Output is correct
64 Correct 791 ms 26688 KB Output is correct
65 Correct 787 ms 26264 KB Output is correct
66 Correct 802 ms 26356 KB Output is correct
67 Correct 804 ms 26276 KB Output is correct
68 Correct 791 ms 26580 KB Output is correct
69 Correct 783 ms 26608 KB Output is correct
70 Correct 785 ms 26596 KB Output is correct
71 Correct 791 ms 26336 KB Output is correct
72 Correct 787 ms 26356 KB Output is correct
73 Correct 785 ms 26648 KB Output is correct
74 Correct 850 ms 26256 KB Output is correct
75 Correct 858 ms 26580 KB Output is correct
76 Correct 801 ms 26564 KB Output is correct
77 Correct 793 ms 26352 KB Output is correct
78 Correct 788 ms 26456 KB Output is correct
79 Correct 786 ms 26708 KB Output is correct
80 Correct 783 ms 26716 KB Output is correct
81 Correct 788 ms 26496 KB Output is correct
82 Correct 817 ms 26400 KB Output is correct
83 Correct 787 ms 26328 KB Output is correct
84 Correct 789 ms 26732 KB Output is correct