oj.uz

Submission #157326

# Submission time Handle Problem Language Result Execution time Memory
157326 2019-10-10T18:56:09 Z likhon5 Palindromes (APIO14_palindrome) C++14
0 / 100
 126 ms 70548 KB 
#include <bits/stdc++.h>
#define ull unsigned long long
#define ll long long
#define pb push_back
#define mp make_pair
#define fast ios_base::sync_with_stdio(false); cin.tie(NULL)
#define filein freopen("input.txt","r",stdin)
#define fileout freopen("output.txt","w",stdout)
using namespace std;
const int mx=300000;
int nxt[mx][26];
int len[mx],link[mx];
int node,t;
string str;
void pre()
{
    len[1]=-1,len[2]=0;
    link[1]=link[2]=1;
    node=t=2;
}
int cal[mx];
void add(int p)
{
    while(str[p-len[t]-1]!=str[p]) t=link[t];
    int x=link[t];
    while(str[p-len[x]-1]!=str[p]) x=link[x];
    int c=str[p]-'a';
    if(nxt[t][c]==false)
    {
        nxt[t][c]=++node;
        len[node]=len[t]+2;
        link[node]=(len[node]==1)? 2: nxt[x][c];
    }
    t=nxt[t][c] ;
    cal[node]++;
}
int  main()
{
    cin>>str;
    pre();
    for(int i=0;i<str.size();i++) add(i);
    for(int i=node;i>=3;i--)  cal[link[i]]+=cal[i];
    int ans=-1;
    for(int i=3;i<=node;i++)
    {
        ans=max(ans,len[i]*cal[i]);
    }
    cout<<ans<<endl;
}

Compilation message

palindrome.cpp: In function 'int main()':
palindrome.cpp:41:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i=0;i<str.size();i++) add(i);
                 ~^~~~~~~~~~~

Subtask #1
0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 504 KB Output is correct
2 Correct 2 ms 376 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 376 KB Output is correct
5 Correct 2 ms 376 KB Output is correct
6 Correct 2 ms 376 KB Output is correct
7 Correct 2 ms 376 KB Output is correct
8 Correct 2 ms 376 KB Output is correct
9 Correct 2 ms 376 KB Output is correct
10 Correct 2 ms 376 KB Output is correct
11 Correct 2 ms 376 KB Output is correct
12 Incorrect 2 ms 376 KB Output isn't correct
13 Halted 0 ms 0 KB -

Subtask #2
0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 632 KB Output is correct
2 Correct 2 ms 504 KB Output is correct
3 Correct 2 ms 504 KB Output is correct
4 Correct 2 ms 380 KB Output is correct
5 Correct 2 ms 504 KB Output is correct
6 Correct 2 ms 504 KB Output is correct
7 Correct 2 ms 504 KB Output is correct
8 Correct 2 ms 504 KB Output is correct
9 Incorrect 2 ms 504 KB Output isn't correct
10 Halted 0 ms 0 KB -

Subtask #3
0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 1656 KB Output is correct
2 Correct 4 ms 1448 KB Output is correct
3 Correct 4 ms 1528 KB Output is correct
4 Correct 4 ms 1528 KB Output is correct
5 Correct 4 ms 1528 KB Output is correct
6 Correct 4 ms 1528 KB Output is correct
7 Correct 4 ms 1528 KB Output is correct
8 Incorrect 3 ms 376 KB Output isn't correct
9 Halted 0 ms 0 KB -

Subtask #4
0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 22 ms 12152 KB Output is correct
2 Correct 22 ms 11960 KB Output is correct
3 Incorrect 23 ms 12024 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #5
0 / 27.0

# Verdict Execution time Memory Grader output
1 Runtime error 126 ms 70548 KB Execution killed with signal 11 (could be triggered by violating memory limits)
2 Halted 0 ms 0 KB -