oj.uz

Submission #1029832

# Submission time Handle Problem Language Result Execution time Memory
1029832 2024-07-21T11:45:41 Z earlyamazon Savez (COCI15_savez) C++14
96 / 120
 1000 ms 46108 KB 
// wzorcowka KMP i trie

#include <bits/stdc++.h>
using namespace std;

const int mn = 1e6+7;
int n, terwyn, wyn, wsk = 2;
vector<int> ps;

struct node{
    vector<int> s;
    int dp = 0;
};

node trie[mn];

void zejdz(string s, int ind=1, int poz=0, int indps=0){
    // cout<<"a: "<<s<<" "<<indps<<" "<<poz<<" "<<ind<<"\n";
    if (indps < ps.size() && ps[indps] == poz) {
        terwyn = max(terwyn, trie[ind].dp);
        indps++;
    }
    if (poz == s.size()){
        trie[ind].dp = terwyn + 1;
        wyn = max(wyn, trie[ind].dp);
        return;
    }
    if (trie[ind].s.size() < 26) trie[ind].s.resize(26);
    if (!trie[ind].s[s[poz]-'A']){
        trie[ind].s[s[poz]-'A'] = wsk++;
    }
    zejdz(s, trie[ind].s[s[poz] - 'A'], poz+1, indps);
}

int main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    cin>>n;
    string s;
    trie[1].s.resize(26);
    for (int i = 0; i < n; i++){
        cin>>s;
        vector<int> pi = {0};
        ps.clear();
        ps.push_back(s.size());
        terwyn = 0;
        for (int j = 1; j < s.size(); j++){
            int k = pi.back();
            while (s[j] != s[k] && k){
                k = pi[k-1];
            }
            pi.push_back(k);
            if (s[j] == s[k]) {
                pi.back()++;
            }
        }
        // for (auto j : pi) cout<<j<<" ";
        // cout<<"\n";
        int k = pi.back();
        while (k){
            ps.push_back(k);
            k = pi[k-1];
        }
        reverse(ps.begin(), ps.end());
        // for (auto j : ps) cout<<j<<" ";
        // cout<<"\n";
        zejdz(s);
    }
    cout<<wyn<<"\n";
}

Compilation message

savez.cpp: In function 'void zejdz(std::string, int, int, int)':
savez.cpp:19:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |     if (indps < ps.size() && ps[indps] == poz) {
      |         ~~~~~~^~~~~~~~~~~
savez.cpp:23:13: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   23 |     if (poz == s.size()){
      |         ~~~~^~~~~~~~~~~
savez.cpp: In function 'int main()':
savez.cpp:46:27: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   46 |         for (int j = 1; j < s.size(); j++){
      |                         ~~^~~~~~~~~~

Subtask #1
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 31768 KB Output is correct
2 Correct 15 ms 31576 KB Output is correct
3 Correct 13 ms 31732 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 31576 KB Output is correct
2 Correct 12 ms 31576 KB Output is correct
3 Correct 24 ms 41564 KB Output is correct

Subtask #3
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 123 ms 36944 KB Output is correct
2 Correct 121 ms 37712 KB Output is correct
3 Execution timed out 1045 ms 40232 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #4
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 21 ms 36696 KB Output is correct
2 Execution timed out 1065 ms 46108 KB Time limit exceeded
3 Halted 0 ms 0 KB -

Subtask #5
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 93 ms 37356 KB Output is correct
2 Correct 81 ms 37204 KB Output is correct

Subtask #6
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 69 ms 37232 KB Output is correct
2 Correct 50 ms 37136 KB Output is correct

Subtask #7
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 49 ms 37200 KB Output is correct
2 Correct 49 ms 37120 KB Output is correct

Subtask #8
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 49 ms 37204 KB Output is correct
2 Correct 43 ms 37976 KB Output is correct

Subtask #9
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 43 ms 32340 KB Output is correct
2 Correct 41 ms 32344 KB Output is correct

Subtask #10
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 53 ms 32900 KB Output is correct
2 Correct 51 ms 33364 KB Output is correct
3 Correct 61 ms 33620 KB Output is correct