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답안 #1026438

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1026438 2024-07-18T06:00:01 Z caterpillow Cubeword (CEOI19_cubeword) C++17
84 / 100
 1100 ms 10576 KB 
#include <bits/stdc++.h>

using namespace std;

#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")

using db = long double;
using ll = long long;
using pl = pair<ll, ll>;
using pi = pair<int, int>;
#define vt vector
#define f first
#define s second
#define pb push_back
#define all(x) x.begin(), x.end() 
#define size(x) ((int) (x).size())
#define FOR(i, a, b) for (int i = (a); i < (b); i++)
#define ROF(i, a, b) for (int i = (b) - 1; i >= (a); i--)
#define F0R(i, b) FOR (i, 0, b)
#define endl '\n'
const ll INF = 1e18;
const int inf = 1e9;

template<typename Tuple, size_t... Is>
void print_tuple(const Tuple& t, index_sequence<Is...>) {
    ((cerr << (Is == 0 ? "{" : ", ") << get<Is>(t)), ...);
    cerr << "}";
}

template<typename... Args>
ostream& operator<<(ostream& os, const tuple<Args...>& t) {
    print_tuple(t, index_sequence_for<Args...>{});
    return os;
}

ostream& operator<<(ostream& os, string& s) {
    for (char c : s) os << c; 
    return os;
}

template<template<typename> class Container, typename T>
ostream& operator<<(ostream& os, Container<T> o) {
    os << "{"; 
    int g = size(o); 
    for (auto i : o) os << i << ((--g) == 0 ? "" : ", "); 
    os << "}";
    return os;
}

template<typename T, typename V>
ostream& operator<<(ostream& os, const pair<T, V> p) {
    os << "{" << p.f << ", " << p.s << "}";
    return os;
}

template <typename T, typename... V>
void printer(const char *names, T &&head, V &&...tail) {
    int i = 0;
    while (names[i] != '\0' && names[i] != ',') i++;
    constexpr bool is_str = is_same_v<decay_t<T>, const char*>;
    if constexpr (is_str) cerr << head; // ignore directly passed strings
    else cerr.write(names, i) << " = " << head; 
    if constexpr (sizeof...(tail)) cerr << (is_str ? "" : ","), printer(names + i + 1, tail...);
    else cerr << endl;
}

#ifdef LOCAL
#define dbg(...) std::cerr << __LINE__ << ": ", printer(#__VA_ARGS__, __VA_ARGS__)
#else
#define dbg(x...)
#define cerr if (0) std::cerr
#endif

const ll mod = 998244353;
void add(ll& a, ll b) {
    a = (a + b) % mod;
}

template<typename T>
T mul(T t) {
    return t;
}

template<typename T, typename... Args> 
T mul(T f, Args... args) {
    return (f * mul(args...)) % mod;
}

/*

bucket by word lengths
only care about first and last characters
add both forwards and backwards versions

remove words that are the reverse of each other
dont add duplicates for palindromes

precompute the # of ways to colour a cell if its neighbours are values [a][b][c]


*/

const string alph = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
const ll m = 62;
map<char, int> mp;

ll triples[m][m][m]; // first index is the "sink", while next three are the sources
ll solve(vt<vt<ll>>& cnt) {
    memset(triples, 0, sizeof(triples));
    ll ans = 0;
    F0R (i, m) {
        F0R (a, m) {
            if (!cnt[a][i]) continue;
            F0R (b, m) {
                if (!cnt[b][i]) continue;
                F0R (c, m) {
                    if (!cnt[c][i]) continue;
                    add(triples[a][b][c], mul(cnt[a][i], cnt[b][i], cnt[c][i]));
                }
            }
        }
    }
    F0R (a, m) {
        F0R (b, m) {
            F0R (c, m) {
                F0R (d, m) {
                    add(ans, mul(triples[a][b][c], triples[a][b][d], triples[a][c][d], triples[b][c][d]));
                }
            }
        }
    }
    return ans;
}

main() {
    cin.tie(0)->sync_with_stdio(0);

    assert(size(alph) == m);
    F0R (i, size(alph)) {
        mp[alph[i]] = i;
    }
    
    int n; cin >> n;
    set<string> pool;
    vt<vt<vt<ll>>> cnts(11, vt<vt<ll>>(m, vt<ll>(m)));
    F0R (i, n) {
        string st; cin >> st;
        string rst = st;
        reverse(all(rst));
        if (pool.count(rst)) continue;
        cnts[size(st)][mp[st[0]]][mp[st.back()]]++;
        if (st != rst) cnts[size(rst)][mp[rst[0]]][mp[rst.back()]]++;
        pool.insert(st);
    }
    ll ans = 0;
    FOR (i, 3, 11) {
        add(ans, solve(cnts[i]));
    }
    cout << ans << endl;
}

Compilation message

cubeword.cpp:136:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
  136 | main() {
      | ^~~~

Subtask #1
21.0 / 21.0

# 결과 실행 시간 메모리 Grader output
1 Correct 798 ms 9932 KB Output is correct
2 Correct 796 ms 9900 KB Output is correct
3 Correct 778 ms 9808 KB Output is correct
4 Correct 799 ms 9916 KB Output is correct
5 Correct 832 ms 9932 KB Output is correct
6 Correct 802 ms 9876 KB Output is correct
7 Correct 806 ms 9816 KB Output is correct
8 Correct 805 ms 9932 KB Output is correct
9 Correct 828 ms 9916 KB Output is correct
10 Correct 809 ms 9924 KB Output is correct
11 Correct 796 ms 10044 KB Output is correct
12 Correct 799 ms 9916 KB Output is correct
13 Correct 773 ms 9928 KB Output is correct
14 Correct 793 ms 9808 KB Output is correct
15 Correct 800 ms 9860 KB Output is correct
16 Correct 794 ms 9724 KB Output is correct
17 Correct 835 ms 9780 KB Output is correct
18 Correct 791 ms 9808 KB Output is correct
19 Correct 777 ms 9896 KB Output is correct
20 Correct 784 ms 9812 KB Output is correct
21 Correct 815 ms 9916 KB Output is correct

Subtask #2
29.0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 798 ms 9932 KB Output is correct
2 Correct 796 ms 9900 KB Output is correct
3 Correct 778 ms 9808 KB Output is correct
4 Correct 799 ms 9916 KB Output is correct
5 Correct 832 ms 9932 KB Output is correct
6 Correct 802 ms 9876 KB Output is correct
7 Correct 806 ms 9816 KB Output is correct
8 Correct 805 ms 9932 KB Output is correct
9 Correct 828 ms 9916 KB Output is correct
10 Correct 809 ms 9924 KB Output is correct
11 Correct 796 ms 10044 KB Output is correct
12 Correct 799 ms 9916 KB Output is correct
13 Correct 773 ms 9928 KB Output is correct
14 Correct 793 ms 9808 KB Output is correct
15 Correct 800 ms 9860 KB Output is correct
16 Correct 794 ms 9724 KB Output is correct
17 Correct 835 ms 9780 KB Output is correct
18 Correct 791 ms 9808 KB Output is correct
19 Correct 777 ms 9896 KB Output is correct
20 Correct 784 ms 9812 KB Output is correct
21 Correct 815 ms 9916 KB Output is correct
22 Correct 837 ms 10100 KB Output is correct
23 Correct 759 ms 10164 KB Output is correct
24 Correct 769 ms 10260 KB Output is correct
25 Correct 799 ms 10232 KB Output is correct
26 Correct 784 ms 10248 KB Output is correct
27 Correct 800 ms 10248 KB Output is correct
28 Correct 803 ms 10060 KB Output is correct
29 Correct 802 ms 10120 KB Output is correct
30 Correct 810 ms 10252 KB Output is correct
31 Correct 807 ms 10248 KB Output is correct
32 Correct 807 ms 10068 KB Output is correct
33 Correct 798 ms 10448 KB Output is correct
34 Correct 816 ms 10064 KB Output is correct
35 Correct 798 ms 10324 KB Output is correct
36 Correct 785 ms 10068 KB Output is correct
37 Correct 795 ms 10104 KB Output is correct
38 Correct 776 ms 10244 KB Output is correct
39 Correct 766 ms 10252 KB Output is correct
40 Correct 810 ms 10252 KB Output is correct
41 Correct 783 ms 10252 KB Output is correct
42 Correct 814 ms 10252 KB Output is correct

Subtask #3
34.0 / 34.0

# 결과 실행 시간 메모리 Grader output
1 Correct 798 ms 9932 KB Output is correct
2 Correct 796 ms 9900 KB Output is correct
3 Correct 778 ms 9808 KB Output is correct
4 Correct 799 ms 9916 KB Output is correct
5 Correct 832 ms 9932 KB Output is correct
6 Correct 802 ms 9876 KB Output is correct
7 Correct 806 ms 9816 KB Output is correct
8 Correct 805 ms 9932 KB Output is correct
9 Correct 828 ms 9916 KB Output is correct
10 Correct 809 ms 9924 KB Output is correct
11 Correct 796 ms 10044 KB Output is correct
12 Correct 799 ms 9916 KB Output is correct
13 Correct 773 ms 9928 KB Output is correct
14 Correct 793 ms 9808 KB Output is correct
15 Correct 800 ms 9860 KB Output is correct
16 Correct 794 ms 9724 KB Output is correct
17 Correct 835 ms 9780 KB Output is correct
18 Correct 791 ms 9808 KB Output is correct
19 Correct 777 ms 9896 KB Output is correct
20 Correct 784 ms 9812 KB Output is correct
21 Correct 815 ms 9916 KB Output is correct
22 Correct 837 ms 10100 KB Output is correct
23 Correct 759 ms 10164 KB Output is correct
24 Correct 769 ms 10260 KB Output is correct
25 Correct 799 ms 10232 KB Output is correct
26 Correct 784 ms 10248 KB Output is correct
27 Correct 800 ms 10248 KB Output is correct
28 Correct 803 ms 10060 KB Output is correct
29 Correct 802 ms 10120 KB Output is correct
30 Correct 810 ms 10252 KB Output is correct
31 Correct 807 ms 10248 KB Output is correct
32 Correct 807 ms 10068 KB Output is correct
33 Correct 798 ms 10448 KB Output is correct
34 Correct 816 ms 10064 KB Output is correct
35 Correct 798 ms 10324 KB Output is correct
36 Correct 785 ms 10068 KB Output is correct
37 Correct 795 ms 10104 KB Output is correct
38 Correct 776 ms 10244 KB Output is correct
39 Correct 766 ms 10252 KB Output is correct
40 Correct 810 ms 10252 KB Output is correct
41 Correct 783 ms 10252 KB Output is correct
42 Correct 814 ms 10252 KB Output is correct
43 Correct 860 ms 10356 KB Output is correct
44 Correct 797 ms 10556 KB Output is correct
45 Correct 840 ms 10348 KB Output is correct
46 Correct 842 ms 10316 KB Output is correct
47 Correct 835 ms 10324 KB Output is correct
48 Correct 867 ms 10328 KB Output is correct
49 Correct 832 ms 10360 KB Output is correct
50 Correct 867 ms 10360 KB Output is correct
51 Correct 856 ms 10576 KB Output is correct
52 Correct 842 ms 10224 KB Output is correct
53 Correct 851 ms 10356 KB Output is correct
54 Correct 852 ms 10108 KB Output is correct
55 Correct 849 ms 10208 KB Output is correct
56 Correct 851 ms 10576 KB Output is correct
57 Correct 847 ms 10336 KB Output is correct
58 Correct 811 ms 10356 KB Output is correct
59 Correct 858 ms 10576 KB Output is correct
60 Correct 845 ms 10176 KB Output is correct
61 Correct 829 ms 10324 KB Output is correct
62 Correct 835 ms 10324 KB Output is correct
63 Correct 855 ms 10348 KB Output is correct

Subtask #4
0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 798 ms 9932 KB Output is correct
2 Correct 796 ms 9900 KB Output is correct
3 Correct 778 ms 9808 KB Output is correct
4 Correct 799 ms 9916 KB Output is correct
5 Correct 832 ms 9932 KB Output is correct
6 Correct 802 ms 9876 KB Output is correct
7 Correct 806 ms 9816 KB Output is correct
8 Correct 805 ms 9932 KB Output is correct
9 Correct 828 ms 9916 KB Output is correct
10 Correct 809 ms 9924 KB Output is correct
11 Correct 796 ms 10044 KB Output is correct
12 Correct 799 ms 9916 KB Output is correct
13 Correct 773 ms 9928 KB Output is correct
14 Correct 793 ms 9808 KB Output is correct
15 Correct 800 ms 9860 KB Output is correct
16 Correct 794 ms 9724 KB Output is correct
17 Correct 835 ms 9780 KB Output is correct
18 Correct 791 ms 9808 KB Output is correct
19 Correct 777 ms 9896 KB Output is correct
20 Correct 784 ms 9812 KB Output is correct
21 Correct 815 ms 9916 KB Output is correct
22 Correct 837 ms 10100 KB Output is correct
23 Correct 759 ms 10164 KB Output is correct
24 Correct 769 ms 10260 KB Output is correct
25 Correct 799 ms 10232 KB Output is correct
26 Correct 784 ms 10248 KB Output is correct
27 Correct 800 ms 10248 KB Output is correct
28 Correct 803 ms 10060 KB Output is correct
29 Correct 802 ms 10120 KB Output is correct
30 Correct 810 ms 10252 KB Output is correct
31 Correct 807 ms 10248 KB Output is correct
32 Correct 807 ms 10068 KB Output is correct
33 Correct 798 ms 10448 KB Output is correct
34 Correct 816 ms 10064 KB Output is correct
35 Correct 798 ms 10324 KB Output is correct
36 Correct 785 ms 10068 KB Output is correct
37 Correct 795 ms 10104 KB Output is correct
38 Correct 776 ms 10244 KB Output is correct
39 Correct 766 ms 10252 KB Output is correct
40 Correct 810 ms 10252 KB Output is correct
41 Correct 783 ms 10252 KB Output is correct
42 Correct 814 ms 10252 KB Output is correct
43 Correct 860 ms 10356 KB Output is correct
44 Correct 797 ms 10556 KB Output is correct
45 Correct 840 ms 10348 KB Output is correct
46 Correct 842 ms 10316 KB Output is correct
47 Correct 835 ms 10324 KB Output is correct
48 Correct 867 ms 10328 KB Output is correct
49 Correct 832 ms 10360 KB Output is correct
50 Correct 867 ms 10360 KB Output is correct
51 Correct 856 ms 10576 KB Output is correct
52 Correct 842 ms 10224 KB Output is correct
53 Correct 851 ms 10356 KB Output is correct
54 Correct 852 ms 10108 KB Output is correct
55 Correct 849 ms 10208 KB Output is correct
56 Correct 851 ms 10576 KB Output is correct
57 Correct 847 ms 10336 KB Output is correct
58 Correct 811 ms 10356 KB Output is correct
59 Correct 858 ms 10576 KB Output is correct
60 Correct 845 ms 10176 KB Output is correct
61 Correct 829 ms 10324 KB Output is correct
62 Correct 835 ms 10324 KB Output is correct
63 Correct 855 ms 10348 KB Output is correct
64 Execution timed out 1121 ms 10428 KB Time limit exceeded
65 Halted 0 ms 0 KB -