Submission #858999

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
858999	2023-10-09 14:15:23	VinhLuu	Palindromic Partitions (CEOI17_palindromic)	C++17	60 / 100	584 ms	131072 KiB

palindromic

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#include <bits/stdc++.h>
#define ll long long
//#define int long long
using namespace std;
const ll mod = 1e9 + 7;
const int Max = 1e6 + 5;
const ll dm = 998244353;
string s[Max];
int dp[Max],n;
ll lt[Max],hs[Max],t[Max],pw[Max];
int get(int i,int j){
    return (hs[j]%mod + mod - (1LL * hs[i - 1]*lt[j - i + 1])%mod)%mod;
}
int got(int i,int j){
    return (t[j]%dm + dm - (1LL * t[i - 1]*pw[j - i + 1])%dm)%dm;
}
int dfs(int i){
    if(dp[i] != 0) return dp[i];
    dp[i] = 1;
    int l = i, r = n - i + 1;
    if(l > r) return dp[i] = 0;
    if(l == r) return dp[i] = 1;
    int mid = (r - l + 1) / 2;
    for(int j = 1; j <= mid; j ++){
        if(get(l, l + j - 1) == get(r - j + 1, r) && got(l, l + j - 1) == got(r - j + 1, r)){
 
 
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• Subtask 1: 15 / 15
• Subtask 2: 20 / 20
• Subtask 3: 25 / 25
• Subtask 4: 0 / 40