Submission #161509

#	Time	Username	Problem	Language	Result	Execution time	Memory
161509		Minnakhmetov	Palindromic Partitions (CEOI17_palindromic)	C++14	100 / 100	53 ms	19832 KiB

palindromic

#include <bits/stdc++.h>
    
#define ll long long
#define all(aaa) aaa.begin(), aaa.end()
 
using namespace std;

const int N = 1e6 + 5, X = 997, M = 1e9 + 9;
int dp[N];
ll p[N];

signed main() {
    ios_base::sync_with_stdio(0);
    cin.tie(NULL);

    p[0] = 1;
    for (int i = 1; i < N; i++)
        p[i] = p[i - 1] * X;

    int t;
    cin >> t;

    while (t--) {
        string s;
        cin >> s;

        int n = s.size();
        int ans = 0, i = 0;

        bool work = true;
        while (work) {
            work = false;
            ll h1 = 0, h2 = 0;
            for (int j = 1; j * 2 <= n - i * 2; j++) {
                h1 = h1 * X + s[j + i - 1];
                h2 = h2 + s[n - j - i] * p[j - 1];
                if (h1 == h2) {
                    i += j;
                    ans += 2;
                    work = true;
                    break;
                }
            }
        }

        if (i * 2 < n)
            ans++;

        cout << ans << "\n";
        
    }

    return 0;
}

• Subtask 1: 15 / 15
• Subtask 2: 20 / 20
• Subtask 3: 25 / 25
• Subtask 4: 40 / 40