Submission #838755

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
838755	2023-08-27 17:15:58	popovicirobert	Palindromes (APIO14_palindrome)	C++14	23 / 100	164 ms	44148 KiB

palindrome

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#include <bits/stdc++.h>
using namespace std;
using ull = unsigned long long;
constexpr int BASE = (int) 1e9 + 7;
constexpr int MAXN = (int) 3e5;
char s[MAXN + 5];
ull pref_hash[MAXN + 5];
ull power[MAXN + 5];
inline ull Get(int l, int r) {
    return pref_hash[r] - pref_hash[l - 1] * power[r - l + 1];
}
char str[2 * MAXN + 5];
int len[2 * MAXN + 5];
int Build(char* s, int n) {
    power[0] = 1;
    for (int i = 1; i <= n; i++) {
        pref_hash[i] = pref_hash[i - 1] * BASE + s[i] - 'a' + 1;
        power[i] = power[i - 1] * BASE;
    }
    int size = 0;
    str[++size] = '*';
    for (int i = 1; i <= n; i++) {
 
 
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• Subtask 2: 15 / 15
• Subtask 3: 0 / 24
• Subtask 4: 0 / 26
• Subtask 5: 0 / 27