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Submission #885037

# Submission time Handle Problem Language Result Execution time Memory
885037 2023-12-08T20:42:12 Z patrikpavic2 Palindromes (APIO14_palindrome) C++17
0 / 100
 5 ms 1224 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;
 
struct node{
    node *ch[30], *bk;
    int len, cnt;
    node() {}
    node(int _len) { len = _len; }
};
 
bool cmp(node* X, node* Y){
    return X->len > Y->len;
}
 
string s;
int n;
ll mx;
vector < node* > v;
 
void precompute(){
    node *n1 = new node(-1); 
    node *n0 = new node(0);
    n0->bk = n1; n1->bk = n1;
    node* cur = n0;
    for(int i = 0;i < n;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), v.PB(cur->ch[s[i] - 'a']);
        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), v.PB(rmb->ch[s[i] - 'a']);
            cur->bk = rmb->ch[s[i] - 'a'];
        }
    }
}
 
 
 
int main(){
	cin >> s;
	n = (int)s.size();
   	precompute();
    sort(v.begin(), v.end(), cmp);
    for(int i = 0;i < v.size();i++){
        mx = max(mx, (ll)v[i]->len * v[i]->cnt);
        v[i]->bk->cnt += v[i]->cnt;
    }
    cout << mx << endl;
}

Compilation message

palindrome.cpp: In function 'int main()':
palindrome.cpp:62:21: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<node*>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   62 |     for(int i = 0;i < v.size();i++){
      |                   ~~^~~~~~~~~~

Subtask #1
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 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 404 KB Output is correct
10 Correct 1 ms 344 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 348 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 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 1 ms 348 KB Output is correct
19 Runtime error 1 ms 348 KB Execution killed with signal 11
20 Halted 0 ms 0 KB -

Subtask #2
0 / 15.0

# Verdict Execution time Memory Grader output
1 Runtime error 1 ms 344 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

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 Runtime error 4 ms 860 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #5
0 / 27.0

# Verdict Execution time Memory Grader output
1 Runtime error 5 ms 1224 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -