oj.uz

Submission #1111629

# Submission time Handle Problem Language Result Execution time Memory
1111629 2024-11-12T12:04:14 Z simona1230 Palindromes (APIO14_palindrome) C++17
100 / 100
 87 ms 109028 KB 
#include <bits/stdc++.h>
using namespace std;

struct letter
{
    long long l[27],suf,len,cnt;
    vector<long long> v;
};

string s;
letter l[300001];
long long last,num;

// curr e vyrhyt S kojto prodyljavame s tek bukva x xSx
void add(long long p)
{
    long long i=s[p]-'a';
    long long curr=last,len=0;
    while(1)
    {
        len=l[curr].len;
        if(p-len-1>=0&&s[p-len-1]==s[p])
            break;

        curr=l[curr].suf;
    }

    if(l[curr].l[i])
    {
        last=l[curr].l[i];
        l[last].cnt++;
        return;
    }

    last=++num;
    l[num].len=l[curr].len+2;
    l[num].cnt=1;
    l[curr].l[i]=num;

    if(l[num].len==1)
    {
        l[num].suf=2;
        l[2].v.push_back(num);
        return;
    }

    while(1)
    {
        curr=l[curr].suf;
        len=l[curr].len;

        if(p-len-1>=0&&s[p-len-1]==s[p])
        {
            l[num].suf=l[curr].l[i];
            l[l[num].suf].v.push_back(num);
            break;
        }
    }
}

void init()
{
    num=2;
    last=2;
    l[1].len=-1;
    l[1].suf=1;

    l[2].len=0;
    l[2].suf=1;

    l[1].v.push_back(2);
}

long long sz[300001],ans;

void dfs(long long i)
{
    //cout<<i<<endl;
    sz[i]=l[i].cnt;
    for(long long j=0;j<l[i].v.size();j++)
    {
        long long nb=l[i].v[j];
        dfs(nb);

        sz[i]+=sz[nb];
    }

    ans=max(ans,sz[i]*l[i].len);
}


int main()
{
    cin>>s;
    init();
    for(long long i=0;i<s.size();i++)
        add(i);
    dfs(1);
    cout<<ans<<endl;
    return 0;
}

Compilation message

palindrome.cpp: In function 'void dfs(long long int)':
palindrome.cpp:80:24: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   80 |     for(long long j=0;j<l[i].v.size();j++)
      |                       ~^~~~~~~~~~~~~~
palindrome.cpp: In function 'int main()':
palindrome.cpp:96:24: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   96 |     for(long long i=0;i<s.size();i++)
      |                       ~^~~~~~~~~

Subtask #1
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 12 ms 77904 KB Output is correct
2 Correct 11 ms 77904 KB Output is correct
3 Correct 10 ms 77904 KB Output is correct
4 Correct 10 ms 77904 KB Output is correct
5 Correct 10 ms 77904 KB Output is correct
6 Correct 10 ms 77828 KB Output is correct
7 Correct 10 ms 77904 KB Output is correct
8 Correct 11 ms 77904 KB Output is correct
9 Correct 10 ms 77904 KB Output is correct
10 Correct 10 ms 77824 KB Output is correct
11 Correct 12 ms 77904 KB Output is correct
12 Correct 12 ms 77904 KB Output is correct
13 Correct 11 ms 77904 KB Output is correct
14 Correct 10 ms 77832 KB Output is correct
15 Correct 10 ms 77904 KB Output is correct
16 Correct 11 ms 77904 KB Output is correct
17 Correct 14 ms 77904 KB Output is correct
18 Correct 14 ms 77904 KB Output is correct
19 Correct 10 ms 77904 KB Output is correct
20 Correct 22 ms 77904 KB Output is correct
21 Correct 17 ms 77904 KB Output is correct
22 Correct 15 ms 77904 KB Output is correct
23 Correct 13 ms 77904 KB Output is correct
24 Correct 19 ms 77916 KB Output is correct
25 Correct 21 ms 77920 KB Output is correct
26 Correct 19 ms 77904 KB Output is correct
27 Correct 11 ms 77860 KB Output is correct
28 Correct 20 ms 78076 KB Output is correct
29 Correct 16 ms 77904 KB Output is correct
30 Correct 16 ms 77876 KB Output is correct
31 Correct 21 ms 77904 KB Output is correct
32 Correct 18 ms 77904 KB Output is correct

Subtask #2
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 19 ms 77904 KB Output is correct
2 Correct 18 ms 77904 KB Output is correct
3 Correct 18 ms 78160 KB Output is correct
4 Correct 18 ms 77904 KB Output is correct
5 Correct 12 ms 78160 KB Output is correct
6 Correct 19 ms 78332 KB Output is correct
7 Correct 18 ms 77904 KB Output is correct
8 Correct 16 ms 77904 KB Output is correct
9 Correct 13 ms 77904 KB Output is correct
10 Correct 12 ms 77904 KB Output is correct
11 Correct 10 ms 77904 KB Output is correct
12 Correct 10 ms 77904 KB Output is correct

Subtask #3
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 78672 KB Output is correct
2 Correct 15 ms 78672 KB Output is correct
3 Correct 11 ms 78892 KB Output is correct
4 Correct 14 ms 78928 KB Output is correct
5 Correct 11 ms 78124 KB Output is correct
6 Correct 18 ms 78416 KB Output is correct
7 Correct 16 ms 78416 KB Output is correct
8 Correct 15 ms 77904 KB Output is correct
9 Correct 14 ms 77904 KB Output is correct
10 Correct 17 ms 78160 KB Output is correct

Subtask #4
26.0 / 26.0

# Verdict Execution time Memory Grader output
1 Correct 26 ms 85068 KB Output is correct
2 Correct 23 ms 83792 KB Output is correct
3 Correct 31 ms 88268 KB Output is correct
4 Correct 26 ms 85976 KB Output is correct
5 Correct 24 ms 80464 KB Output is correct
6 Correct 25 ms 80976 KB Output is correct
7 Correct 27 ms 82248 KB Output is correct
8 Correct 20 ms 78160 KB Output is correct
9 Correct 23 ms 80456 KB Output is correct
10 Correct 26 ms 80208 KB Output is correct

Subtask #5
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 55 ms 99300 KB Output is correct
2 Correct 48 ms 92660 KB Output is correct
3 Correct 66 ms 109028 KB Output is correct
4 Correct 63 ms 97004 KB Output is correct
5 Correct 87 ms 85988 KB Output is correct
6 Correct 45 ms 92248 KB Output is correct
7 Correct 50 ms 89636 KB Output is correct
8 Correct 19 ms 78816 KB Output is correct
9 Correct 19 ms 78828 KB Output is correct
10 Correct 75 ms 84984 KB Output is correct
11 Correct 53 ms 93320 KB Output is correct
12 Correct 27 ms 83436 KB Output is correct