oj.uz

Submission #885026

# Submission time Handle Problem Language Result Execution time Memory
885026 2023-12-08T20:30:46 Z patrikpavic2 Palindromes (APIO14_palindrome) C++17
23 / 100
 1000 ms 1760 KB 
#include <algorithm>
#include <vector>
#include <cstdio>
#include <cstring>
#include <iostream>
 
#define PB push_back
 
using namespace std;
 
typedef long long ll;
 
const int N = 3e5 + 500;
const int INF = 0x3f3f3f3f;
const int ALP = 26;
 
struct node{
    node *ch[ALP], *bk;
    int len, cnt;
    node() {}
    node(int _len) { len = _len; }
};
 
node* create_eertree(string &s){
    node *n0 = new node(0);
    node *n1 = new node(-1); 
    n0->bk = n1; n1->bk = n1;
    node* cur = n0;
    for(int i = 0;i < (int)s.size();i++){
        for(;cur->len+1>i||s[i-cur->len-1]!=s[i];cur=cur->bk);
        node *rmb = cur->bk;
        if(!cur->ch[s[i] - 'a'])
            cur->ch[s[i] - 'a'] = new node(cur->len + 2);
        cur = cur->ch[s[i] - 'a']; cur->cnt++;
        for(;rmb->len+1>i||s[i-rmb->len-1]!=s[i];rmb=rmb->bk);
        if(cur->len == 1)
            cur->bk = n0;
        else{
            if(!rmb->ch[s[i] - 'a']) 
            	rmb->ch[s[i] - 'a'] = new node(rmb->len + 2);
            cur->bk = rmb->ch[s[i] - 'a'];
        }
    }
    return n0;
}
 
 
bool cmp(node* X, node* Y){
    return X->len > Y->len;
}


string s;
vector < node* > v;

void dfs(node* x) {
	if(!x) return;
	v.PB(x);
	for(int i = 0;i < 26;i++)
		if(x->ch[i]) dfs(x->ch[i]);
}
 
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cin >> s;
    ll mx = 0;
    node* root = create_eertree(s);
    dfs(root); dfs(root->bk);
    sort(v.begin(), v.end(), cmp);
    for(int i = 0;i < (int)v.size();i++){
        mx = max(mx, (ll)v[i]->len * v[i]->cnt);
        v[i]->bk->cnt += v[i]->cnt;
    }
    cout << mx << endl;
}

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 460 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 1 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 344 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 344 KB Output is correct
16 Correct 0 ms 344 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 708 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 344 KB Output is correct
21 Correct 0 ms 348 KB Output is correct
22 Correct 1 ms 348 KB Output is correct
23 Correct 0 ms 348 KB Output is correct
24 Correct 0 ms 348 KB Output is correct
25 Correct 0 ms 348 KB Output is correct
26 Correct 1 ms 348 KB Output is correct
27 Correct 0 ms 456 KB Output is correct
28 Correct 0 ms 348 KB Output is correct
29 Correct 0 ms 348 KB Output is correct
30 Correct 0 ms 348 KB Output is correct
31 Correct 0 ms 348 KB Output is correct
32 Correct 0 ms 348 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 600 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 1 ms 684 KB Output is correct
4 Correct 1 ms 600 KB Output is correct
5 Correct 1 ms 604 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 1 ms 604 KB Output is correct
8 Correct 1 ms 860 KB Output is correct
9 Correct 0 ms 604 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 604 KB Output is correct

Subtask #3
0 / 24.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 604 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #4
0 / 26.0

# Verdict Execution time Memory Grader output
1 Execution timed out 1059 ms 604 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 27.0

# Verdict Execution time Memory Grader output
1 Runtime error 2 ms 1760 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -