verify/yuki-1408.cpp

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• Last update: 2023-09-23 21:29:16+09:00
• Link: https://yukicoder.me/problems/1408

Depends on

• library/string/LongestCommonPrefixArray.cpp
• library/string/SuffixArray.cpp
• library/template/template.cpp

Code

#define PROBLEM "https://yukicoder.me/problems/1408"
#include "library/template/template.cpp"
// library
#include "library/string/LongestCommonPrefixArray.cpp"
int main() {
    int n;
    cin >> n;
    vector<string> vs(n);
    scan(vs);
    int m;
    cin >> m;
    ll x, d;
    cin >> x >> d;
    LongestCommonPrefixArray lcp();
    rep(k, 1, m + 1) {
        int i = (x / (n - 1));
        int j = (x % (n - 1));
        if (i > j)
            swap(i, j);
        else
            j++;
        x = (x + d) % (n * (n - 1));
    }
}

#line 1 "verify/yuki-1408.cpp"
#define PROBLEM "https://yukicoder.me/problems/1408"
#line 2 "library/template/template.cpp"
/* #region header */
#pragma GCC optimize("Ofast")
#include <bits/stdc++.h>
using namespace std;
// types
using ll = long long;
using ull = unsigned long long;
using ld = long double;
typedef pair<ll, ll> Pl;
typedef pair<int, int> Pi;
typedef vector<ll> vl;
typedef vector<int> vi;
typedef vector<char> vc;
template <typename T>
using mat = vector<vector<T>>;
typedef vector<vector<int>> vvi;
typedef vector<vector<long long>> vvl;
typedef vector<vector<char>> vvc;
// abreviations
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
#define rep_(i, a_, b_, a, b, ...) for (ll i = (a), max_i = (b); i < max_i; i++)
#define rep(i, ...) rep_(i, __VA_ARGS__, __VA_ARGS__, 0, __VA_ARGS__)
#define rrep_(i, a_, b_, a, b, ...) \
    for (ll i = (b - 1), min_i = (a); i >= min_i; i--)
#define rrep(i, ...) rrep_(i, __VA_ARGS__, __VA_ARGS__, 0, __VA_ARGS__)
#define srep(i, a, b, c) for (ll i = (a), max_i = (b); i < max_i; i += c)
#define SZ(x) ((int)(x).size())
#define pb(x) push_back(x)
#define eb(x) emplace_back(x)
#define mp make_pair
//入出力
#define print(x) cout << x << endl
template <class T>
ostream &operator<<(ostream &os, const vector<T> &v)
{
    for (auto &e : v)
        cout << e << " ";
    cout << endl;
    return os;
}
void scan(int &a) { cin >> a; }
void scan(long long &a) { cin >> a; }
void scan(char &a) { cin >> a; }
void scan(double &a) { cin >> a; }
void scan(string &a) { cin >> a; }
template <class T>
void scan(vector<T> &a)
{
    for (auto &i : a)
        scan(i);
}
#define vsum(x) accumulate(all(x), 0LL)
#define vmax(a) *max_element(all(a))
#define vmin(a) *min_element(all(a))
#define lb(c, x) distance((c).begin(), lower_bound(all(c), (x)))
#define ub(c, x) distance((c).begin(), upper_bound(all(c), (x)))
// functions
// gcd(0, x) fails.
ll gcd(ll a, ll b) { return b ? gcd(b, a % b) : a; }
ll lcm(ll a, ll b) { return a / gcd(a, b) * b; }
template <class T>
bool chmax(T &a, const T &b)
{
    if (a < b)
    {
        a = b;
        return 1;
    }
    return 0;
}
template <class T>
bool chmin(T &a, const T &b)
{
    if (b < a)
    {
        a = b;
        return 1;
    }
    return 0;
}
template <typename T>
T mypow(T x, ll n)
{
    T ret = 1;
    while (n > 0)
    {
        if (n & 1)
            (ret *= x);
        (x *= x);
        n >>= 1;
    }
    return ret;
}
ll modpow(ll x, ll n, const ll mod)
{
    ll ret = 1;
    while (n > 0)
    {
        if (n & 1)
            (ret *= x);
        (x *= x);
        n >>= 1;
        x %= mod;
        ret %= mod;
    }
    return ret;
}
ll safemod(ll x, ll mod) { return (x % mod + mod) % mod; }
int popcnt(ull x) { return __builtin_popcountll(x); }
template <typename T>
vector<int> IOTA(vector<T> a)
{
    int n = a.size();
    vector<int> id(n);
    iota(all(id), 0);
    sort(all(id), [&](int i, int j)
         { return a[i] < a[j]; });
    return id;
}
long long xor64(long long range) {
    static uint64_t x = 88172645463325252ULL;
    x ^= x << 13;
    x ^= x >> 7;
    return (x ^= x << 17) % range;
}
struct Timer
{
    clock_t start_time;
    void start() { start_time = clock(); }
    int lap()
    {
        // return x ms.
        return (clock() - start_time) * 1000 / CLOCKS_PER_SEC;
    }
};
template <typename T = int>
struct Edge
{
    int from, to;
    T cost;
    int idx;

    Edge() = default;

    Edge(int from, int to, T cost = 1, int idx = -1)
        : from(from), to(to), cost(cost), idx(idx) {}

    operator int() const { return to; }
};

template <typename T = int>
struct Graph
{
    vector<vector<Edge<T>>> g;
    int es;

    Graph() = default;

    explicit Graph(int n) : g(n), es(0) {}

    size_t size() const { return g.size(); }

    void add_directed_edge(int from, int to, T cost = 1)
    {
        g[from].emplace_back(from, to, cost, es++);
    }

    void add_edge(int from, int to, T cost = 1)
    {
        g[from].emplace_back(from, to, cost, es);
        g[to].emplace_back(to, from, cost, es++);
    }

    void read(int M, int padding = -1, bool weighted = false,
              bool directed = false)
    {
        for (int i = 0; i < M; i++)
        {
            int a, b;
            cin >> a >> b;
            a += padding;
            b += padding;
            T c = T(1);
            if (weighted)
                cin >> c;
            if (directed)
                add_directed_edge(a, b, c);
            else
                add_edge(a, b, c);
        }
    }
};

/* #endregion*/
// constant
#define inf 1000000000ll
#define INF 4000000004000000000LL
#define endl '\n'
const long double eps = 0.000000000000001;
const long double PI = 3.141592653589793;
#line 3 "verify/yuki-1408.cpp"
// library
#line 1 "library/string/SuffixArray.cpp"
struct SuffixArray {
    vector<int> SA;
    const string s;

    SuffixArray(const string &str) : s(str) {
        SA.resize(s.size());
        iota(begin(SA), end(SA), 0);
        sort(begin(SA), end(SA),
             [&](int a, int b) { return s[a] == s[b] ? a > b : s[a] < s[b]; });
        vector<int> classes(s.size()), c(s.begin(), s.end()), cnt(s.size());
        for (int len = 1; len < s.size(); len <<= 1) {
            for (int i = 0; i < s.size(); i++) {
                if (i > 0 && c[SA[i - 1]] == c[SA[i]] &&
                    SA[i - 1] + len < s.size() &&
                    c[SA[i - 1] + len / 2] == c[SA[i] + len / 2]) {
                    classes[SA[i]] = classes[SA[i - 1]];
                } else {
                    classes[SA[i]] = i;
                }
            }
            iota(begin(cnt), end(cnt), 0);
            copy(begin(SA), end(SA), begin(c));
            for (int i = 0; i < s.size(); i++) {
                int s1 = c[i] - len;
                if (s1 >= 0) SA[cnt[classes[s1]]++] = s1;
            }
            classes.swap(c);
        }
    }

    int operator[](int k) const { return SA[k]; }

    int size() const { return s.size(); }

    bool lt_substr(const string &t, int si = 0, int ti = 0) {
        int sn = (int)s.size(), tn = (int)t.size();
        while (si < sn && ti < tn) {
            if (s[si] < t[ti]) return true;
            if (s[si] > t[ti]) return false;
            ++si, ++ti;
        }
        return si >= sn && ti < tn;
    }

    int lower_bound(const string &t) {
        int low = -1, high = (int)SA.size();
        while (high - low > 1) {
            int mid = (low + high) / 2;
            if (lt_substr(t, SA[mid]))
                low = mid;
            else
                high = mid;
        }
        return high;
    }

    pair<int, int> lower_upper_bound(string &t) {
        int idx = lower_bound(t);
        int low = idx - 1, high = (int)SA.size();
        t.back()++;
        while (high - low > 1) {
            int mid = (low + high) / 2;
            if (lt_substr(t, SA[mid]))
                low = mid;
            else
                high = mid;
        }
        t.back()--;
        return {idx, high};
    }

    void show() {
        for (int i = 0; i < size(); i++) {
            cout << i << ": " << s.substr(SA[i]) << endl;
        }
    }
};
#line 2 "library/string/LongestCommonPrefixArray.cpp"

struct LongestCommonPrefixArray {
    const SuffixArray &SA;
    vector<int> LCP, rank;

    LongestCommonPrefixArray(const SuffixArray &SA) : SA(SA), LCP(SA.size()) {
        rank.resize(SA.size());
        for (int i = 0; i < SA.size(); i++) {
            rank[SA[i]] = i;
        }
        for (int i = 0, h = 0; i < SA.size(); i++) {
            if (rank[i] + 1 < SA.size()) {
                for (int j = SA[rank[i] + 1];
                     max(i, j) + h < SA.size() && SA.s[i + h] == SA.s[j + h];
                     ++h)
                    ;
                LCP[rank[i] + 1] = h;
                if (h > 0) --h;
            }
        }
    }

    int operator[](int k) const { return LCP[k]; }

    int size() const { return LCP.size(); }

    void show() {
        for (int i = 0; i < size(); i++) {
            cout << i << ": " << LCP[i] << " " << SA.s.substr(SA[i]) << endl;
        }
    }
};
#line 5 "verify/yuki-1408.cpp"
int main() {
    int n;
    cin >> n;
    vector<string> vs(n);
    scan(vs);
    int m;
    cin >> m;
    ll x, d;
    cin >> x >> d;
    LongestCommonPrefixArray lcp();
    rep(k, 1, m + 1) {
        int i = (x / (n - 1));
        int j = (x % (n - 1));
        if (i > j)
            swap(i, j);
        else
            j++;
        x = (x + d) % (n * (n - 1));
    }
}

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