Submission #66397

#	Time	Username	Problem	Language	Result	Execution time	Memory
66397		forestryks	Savez (COCI15_savez)	C++14	120 / 120	177 ms	57092 KiB

savez

///////////////////////////////////////////////////////////////////////////////////////////////
#include <bits/stdc++.h>
using namespace std;

// #define int long long

#define FAST_IO ios_base::sync_with_stdio(false); cin.tie(0); cout.tie(0)
#define FILE_IO(x) freopen((string(x) + ".in").c_str(), "r", stdin); freopen((string(x) + ".out").c_str(), "w", stdout)
#define f first
#define s second
#define x1 x1qwer
#define y1 y1qwer
#define right right123
#define left left123
#define foreach(it, v) for (auto it : v)
#define rep(it, n) for (int it = 0; it < n; ++it)
#define forin(it, l, r) for (int it = l; it < r; ++it)
#define all(x) x.begin(), x.end()

typedef long long ll;
typedef unsigned long long ull;
typedef double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
const double DINF = numeric_limits<double>::infinity();
const ll MOD = 1e9 + 7;
const double EPS = 1e-7;
ll gcd(ll a, ll b) { return b ? gcd(b, a % b) : a; }
mt19937 mmtw_(MOD);
uniform_int_distribution<ll> rd_;
ll randomll() { return rd_(mmtw_);}
ll rnd(ll x, ll y) { return rd_(mmtw_) % (y - x + 1) + x; }
template <class T> T fact(T n) { if (n == 1) return 1; return n * fact(n - 1); }
////////////////////////////////////////////////////////////////////////////////////////////////

struct MyMap : vector<pair<short, int>> {
    int& operator[](const short v) {
        auto it = lower_bound(this->begin(), this->end(), make_pair(v, -1));
        if (it != this->end() && it->first == v) {
            return it->second;
        }
        return this->insert(it, {v, 0})->second;
    }
};

const int MAXN = 1e6 + 5;

int n;
int last = 1;
// map<int, int> to[MAXN];
MyMap to[MAXN];
int p[MAXN];
vector<string> s;
int res[MAXN];

int get(const string &s, int i) {
    return (s[i] - 'A') + (s[s.size() - 1 - i] - 'A') * 26;
}

int trie_add(const string &s) {
    int n = s.size();
    int v = 0;
    for (int i = 0; i < n; ++i) {
        int ch = get(s, i);

        if (to[v][ch] == 0) {
            to[v][ch] = last;
            p[last] = v;

            v = last++;
        } else {
            v = to[v][ch];
        }
    }

    res[v]++;

    int r = res[v];

    while (p[v] != -1) {
        res[p[v]] = max(res[p[v]], res[v]);
        v = p[v];
    }

    return r;
}

int main() {
    FAST_IO;
    cin >> n;
    rep(i, n) {
        string a;
        cin >> a;
        s.push_back(a);
    }

    reverse(s.begin(), s.end());

    p[0] = -1;
    int res = 0;
    for (int i = 0; i < n; ++i) {;
        res = max(res, trie_add(s[i]));
    }

    cout << res << endl;
}

• Subtask 1: 12 / 12
• Subtask 2: 12 / 12
• Subtask 3: 12 / 12
• Subtask 4: 12 / 12
• Subtask 5: 12 / 12
• Subtask 6: 12 / 12
• Subtask 7: 12 / 12
• Subtask 8: 12 / 12
• Subtask 9: 12 / 12
• Subtask 10: 12 / 12