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Submission #779928

# Submission time Handle Problem Language Result Execution time Memory
779928 2023-07-12T03:16:32 Z mmk Cubeword (CEOI19_cubeword) C++14
0 / 100
 1100 ms 15568 KB 
#include<bits/stdc++.h>
#define int long long
const int ALP = 62;
const int MOD = 998244353;
using namespace std;
unordered_set<string> words[15];

int getId(char c)
{
    if(c <= '9') return c - '0';

    if(c <= 'Z') return c - 'A' + '9' - '0' + 1;

    if(c <= 'z') return c - 'a' + 'Z' - 'A' + 1 + '9' - '0' + 1;
}

int calc(int sz)
{
    if(words[sz].size() == 0) return 0;
    int ans = 0;
    int freq[ALP][ALP][ALP] = {0};
    int cont[ALP][ALP] = {0};

    for(auto cur : words[sz])
    {
        int beg = getId(cur[0]);
        int end = getId(cur.back());

        cont[beg][end]++;
    }

    for(int a = 0; a < ALP; a++)
    {
        for(int b = 0; b < ALP; b++)
        {
            for(int c = 0; c < ALP; c++)
            {
                for(int end = 0; end < ALP; end++)
                {
                    int mult = 1;
                    mult *= cont[a][end] * cont[b][end] * cont[c][end];
                    mult %= MOD;

                    freq[a][b][c] += mult;
                    freq[a][b][c] %= MOD;
                }
            }
        }
    }

    for(int a = 0; a < ALP; a++)
    {
        for(int b = 0; b < ALP; b++)
        {
            for(int c = 0; c < ALP; c++)
            {
                for(int d = 0; d < ALP; d++)
                {
                    int add = 1;

                    add *= freq[a][b][c]; add %= MOD;
                    add *= freq[a][c][d]; add %= MOD;
                    add *= freq[b][c][d]; add %= MOD;
                    add *= freq[a][b][d]; add %= MOD;

                    ans += add;

                    ans %= MOD;
                }
            }
        }
    }
    return ans;
}

int32_t main()
{
    cin.tie(0)->sync_with_stdio(0);
    int n; cin >> n;

    for(int i = 0; i < n; i++)
    {
        string aux; cin >> aux;

        string rev = aux;
        reverse(rev.begin(),rev.end());

        words[aux.size()].insert(aux);
        words[aux.size()].insert(rev);
    }

    int resp = 0;
    for(int i = 3; i <= 10; i++)
    {
        resp += calc(i);
        resp %= MOD;
    }

    cout << resp;
}

Compilation message

cubeword.cpp: In function 'long long int getId(char)':
cubeword.cpp:15:1: warning: control reaches end of non-void function [-Wreturn-type]
   15 | }
      | ^

Subtask #1
0 / 21.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1126 ms 15568 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #2
0 / 29.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1126 ms 15568 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0 / 34.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1126 ms 15568 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 16.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1126 ms 15568 KB Time limit exceeded
2 Halted 0 ms 0 KB -