oj.uz

Submission #530955

# Submission time Handle Problem Language Result Execution time Memory
530955 2022-02-27T08:09:17 Z Tenis0206 Trener (COCI20_trener) C++11
22 / 110
 827 ms 1796 KB 
#include <bits/stdc++.h>

using namespace std;

const int Mod = 1e9 + 7;

const int Mh = 666013;
const int b = 29;

int n,k;
int dp[1505];

string s[1505];

map<int,int> dps,fc;

int main()
{
    ios::sync_with_stdio(false);
    cin.tie(0);
    cin>>n>>k;
    for(int j=1; j<=k; j++)
    {
        cin>>s[j];
        int Hash = 0;
        for(auto it : s[j])
        {
            Hash = (1LL * Hash * b + (it - 'a' + 1)) % Mh;
        }
        ++dps[Hash];
    }
    for(int i=2; i<=n; i++)
    {
        for(int j=1; j<=k; j++)
        {
            dp[j] = 0;
        }
        for(int j=1; j<=k; j++)
        {
            cin>>s[j];
            fc.clear();
            for(int st=0; st<s[j].size(); st++)
            {
                int Hash = 0;
                for(int dr=st; dr<s[j].size(); dr++)
                {
                    Hash = (1LL * Hash * b + (s[j][dr] - 'a' + 1)) % Mh;
                    if(!fc[Hash])
                    {
                        dp[j] += dps[Hash];
                        dp[j] %= Mod;
                    }
                    ++fc[Hash];
                }
            }
        }
        dps.clear();
        for(int j=1; j<=k; j++)
        {
            int Hash = 0;
            for(auto it : s[j])
            {
                Hash = (1LL * Hash * b + (it - 'a' + 1)) % Mh;
            }
            dps[Hash] += dp[j];
            dps[Hash] %= Mod;
        }
    }
    int rez = 0;
    for(int j=1; j<=k; j++)
    {
        rez += dp[j];
        rez %= Mod;
    }
    cout<<rez<<'\n';
    return 0;
}

Compilation message

trener.cpp: In function 'int main()':
trener.cpp:42:29: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   42 |             for(int st=0; st<s[j].size(); st++)
      |                           ~~^~~~~~~~~~~~
trener.cpp:45:34: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   45 |                 for(int dr=st; dr<s[j].size(); dr++)
      |                                ~~^~~~~~~~~~~~

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct

Subtask #2
0 / 33.0

# Verdict Execution time Memory Grader output
1 Incorrect 827 ms 1796 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 55.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 0 ms 332 KB Output is correct
3 Correct 0 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Incorrect 827 ms 1796 KB Output isn't correct
6 Halted 0 ms 0 KB -