제출 #982706

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
982706	2024-05-14 16:25:05	vjudge1	Palindromic Partitions (CEOI17_palindromic)	C++17	100 / 100	278 ms	55008 KiB

palindromic

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#include <bits/stdc++.h>
#define pii pair<int,int>
#define int long long
#define ff first
#define ss second
using namespace std;
const int mod = 1e9 + 7;
const int p1 = 97;
const int p2 = 107;
const int binv = 268041239;
const int binv2 = 224299067;
const int maxn = 1e6;
vector<int> pows(maxn+7,1);
vector<int> invs(maxn+7,1);
vector<int> pows2(maxn+7,1);
vector<int> invs2(maxn+7,1);
void init()
{
    for (int i = 1; i < maxn; i++)
        pows[i] = pows[i-1]*p1%mod;
    for (int i = 1; i < maxn; i++)
        invs[i] = invs[i-1]*binv%mod;
        
    for (int i = 1; i < maxn; i++)
        pows2[i] = pows2[i-1]*p2%mod;
    for (int i = 1; i < maxn; i++)
        invs2[i] = invs2[i-1]*binv2%mod;
    
}
 
 
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• Subtask 1: 15 / 15
• Subtask 2: 20 / 20
• Subtask 3: 25 / 25
• Subtask 4: 40 / 40