結果

問題 No.1269 I hate Fibonacci Number
ユーザー fuppy_kyopro
提出日時 2021-01-23 01:16:31
言語 C++14
(gcc 13.3.0 + boost 1.87.0)
結果
AC  
実行時間 30 ms / 3,000 ms
コード長 13,041 bytes
コンパイル時間 2,778 ms
コンパイル使用メモリ 188,628 KB
実行使用メモリ 31,232 KB
最終ジャッジ日時 2024-12-29 08:01:17
合計ジャッジ時間 4,082 ms
ジャッジサーバーID
(参考情報)
judge1 / judge5
このコードへのチャレンジ
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ファイルパターン 結果
sample AC * 3
other AC * 36
権限があれば一括ダウンロードができます

ソースコード

diff #
プレゼンテーションモードにする

/*
#pragma GCC target("avx2")
#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
//*/
#include <bits/stdc++.h>
// #include <atcoder/all>
using namespace std;
// using namespace atcoder;
#define DEBUG(x) cerr<<#x<<": "<<x<<endl;
#define DEBUG_VEC(v) cerr<<#v<<":";for(int i=0;i<v.size();i++) cerr<<" "<<v[i]; cerr<<endl;
#define DEBUG_MAT(v) cerr<<#v<<endl;for(int i=0;i<v.size();i++){for(int j=0;j<v[i].size();j++) {cerr<<v[i][j]<<" ";}cerr<<endl;}
typedef long long ll;
// #define int ll
#define vi vector<int>
#define vl vector<ll>
#define vii vector< vector<int> >
#define vll vector< vector<ll> >
#define vs vector<string>
#define pii pair<int,int>
#define pis pair<int,string>
#define psi pair<string,int>
#define pll pair<ll,ll>
template<class S, class T> pair<S, T> operator+(const pair<S, T> &s, const pair<S, T> &t) { return pair<S, T>(s.first + t.first, s.second + t.second
    ); }
template<class S, class T> pair<S, T> operator-(const pair<S, T> &s, const pair<S, T> &t) { return pair<S, T>(s.first - t.first, s.second - t.second
    ); }
template<class S, class T> ostream& operator<<(ostream& os, pair<S, T> p) { os << "(" << p.first << ", " << p.second << ")"; return os; }
#define X first
#define Y second
#define rep(i,n) for(int i=0;i<(int)(n);i++)
#define rep1(i,n) for(int i=1;i<=(int)(n);i++)
#define rrep(i,n) for(int i=(int)(n)-1;i>=0;i--)
#define rrep1(i,n) for(int i=(int)(n);i>0;i--)
#define REP(i,a,b) for(int i=a;i<b;i++)
#define in(x, a, b) (a <= x && x < b)
#define all(c) c.begin(),c.end()
void YES(bool t=true) {cout<<(t?"YES":"NO")<<endl;}
void Yes(bool t=true) {cout<<(t?"Yes":"No")<<endl;}
void yes(bool t=true) {cout<<(t?"yes":"no")<<endl;}
void NO(bool t=true) {cout<<(t?"NO":"YES")<<endl;}
void No(bool t=true) {cout<<(t?"No":"Yes")<<endl;}
void no(bool t=true) {cout<<(t?"no":"yes")<<endl;}
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 (a>b) { a = b; return 1; } return 0; }
#define UNIQUE(v) v.erase(std::unique(v.begin(), v.end()), v.end());
const ll inf = 1000000001;
const ll INF = (ll)1e18 + 1;
const long double pi = 3.1415926535897932384626433832795028841971L;
int popcount(ll t) { return __builtin_popcountll(t); }
// int dx[4] = {1, 0, -1, 0}, dy[4] = {0, 1, 0, -1};
// int dx2[8] = { 1,1,0,-1,-1,-1,0,1 }, dy2[8] = { 0,1,1,1,0,-1,-1,-1 };
vi dx = {0, 1, 0, -1}, dy = {-1, 0, 1, 0};
// vi dx2 = { 1,1,0,-1,-1,-1,0,1 }, dy2 = { 0,1,1,1,0,-1,-1,-1 };
struct Setup_io {
Setup_io() {
ios_base::sync_with_stdio(0), cin.tie(0), cout.tie(0);
cout << fixed << setprecision(25);
}
} setup_io;
const ll MOD = 1000000007;
// const ll MOD = 998244353;
// #define mp make_pair
//#define endl '\n'
template<int char_size>
struct TrieNode {
//
//
int next_idx[char_size]; // Trie-1
vector<int> exist_char; //
vector<int> state_idx; //
int sub_num = 0; // !=
TrieNode() {
for (int i = 0; i < char_size; i++) next_idx[i] = -1;
}
};
template<int char_size, int initial_char>
struct Trie {
using Node = TrieNode<char_size>;
vector<Node> nodes;
int str_num=0; // !=
vector<string> strs; // ididunordered_map
Trie() {
nodes.push_back(Node());
}
void add(string& s, int str_idx, int node_idx, int id) {
// s
if (str_idx == s.size()) {
nodes[node_idx].state_idx.push_back(id);
nodes[node_idx].sub_num++;
return;
}
// s
if (nodes[node_idx].next_idx[s[str_idx] - initial_char] == -1) {
nodes[node_idx].next_idx[s[str_idx] - initial_char] = nodes.size();
nodes[node_idx].exist_char.push_back(s[str_idx] - initial_char);
nodes.push_back(Node());
}
add(s, str_idx+1, nodes[node_idx].next_idx[s[str_idx] - initial_char], id);
nodes[node_idx].sub_num++;
}
void add(string& s, int id=-1) {
if (id == -1) id = str_num;
add(s, 0, 0, id);
str_num++;
strs.push_back(s);
}
// MLE
int sub(string& s, int str_idx, int node_idx) {
// s
if (str_idx == s.size()) {
assert(nodes[node_idx].state_idx.size() > 0);
// id
int id = nodes[node_idx].state_idx.back();
nodes[node_idx].state_idx.pop_back();
nodes[node_idx].sub_num--;
return id;
}
int next_node_idx = nodes[node_idx].next_idx[s[str_idx] - initial_char];
int id = sub(s, str_idx+1, next_node_idx);
nodes[node_idx].sub_num--;
assert(nodes[node_idx].sub_num >= 0);
// s or
if (nodes[next_node_idx].sub_num == 0 and (nodes[node_idx].sub_num > 0 or node_idx == 0)) {
nodes[node_idx].next_idx[s[str_idx] - initial_char] = -1;
rep (i, nodes[node_idx].exist_char.size()) {
if (nodes[node_idx].exist_char[i] == s[str_idx] - initial_char) {
nodes[node_idx].exist_char.erase(nodes[node_idx].exist_char.begin() + i);
break;
}
}
}
return id;
}
// id
int sub(string& s) {
int id = sub(s, 0, 0);
str_num--;
strs[id].clear();
strs[id].shrink_to_fit();
return id;
}
void query(string& s, int str_idx, int node_idx) {
for (int id: nodes[node_idx].state_idx) {
// s[0, str_idx)
}
if (str_idx == s.size()) {
// s
return;
}
if (nodes[node_idx].next_idx[s[str_idx] - initial_char] == -1) {
// sprefix
return;
}
return query(s, str_idx + 1, nodes[node_idx].next_idx[s[str_idx] - initial_char]);
}
// sprefix
void query(string s) {
query(s, 0, 0);
}
void dfs(int node_idx, int depth) {
//
//
for (int c: nodes[node_idx].exist_char) {
assert(nodes[node_idx].next_idx[c] != -1);
dfs(nodes[node_idx].next_idx[c], depth + 1);
}
}
// dfs
void dfs() {
dfs(0, 0);
}
string xor_min(string& s, int str_idx, int node_idx, string& t) {
if (str_idx == s.size()) {
// s
return t;
}
if (nodes[node_idx].next_idx[s[str_idx] - initial_char] != -1) {
t += s[str_idx];
return xor_min(s, str_idx + 1, nodes[node_idx].next_idx[s[str_idx] - initial_char], t);
}
else {
char c = '0' + ('1' - s[str_idx]);
t += c;
return xor_min(s, str_idx + 1, nodes[node_idx].next_idx[c - initial_char], t);
}
}
// sxor
string xor_min(string& s) {
assert(initial_char == '0' and char_size == 2);
assert(str_num > 0);
string res;
return xor_min(s, 0, 0, res);
}
// !=
int size() {
return nodes.size();
}
};
// https://yukicoder.me/submissions/608154 (match, frequencyverify)
template< int char_size, int initial_char >
struct AhoCorasick : Trie< char_size + 1, initial_char > {
const int FAIL = char_size; // next_idx
vector<int> suf_cnt; // suffix
bool is_built = false;
// node_idxc
int move(int node_idx, int c) {
return this->nodes[node_idx].next_idx[c - initial_char];
}
void build() {
is_built = true;
suf_cnt.resize(this->nodes.size());
//
for (int i = 0; i < this->nodes.size(); i++) {
suf_cnt[i] = this->nodes[i].state_idx.size();
}
//
queue<int> qu;
for (int i = 0; i <= char_size; i++) {
if (this->nodes[0].next_idx[i] == -1) {
this->nodes[0].next_idx[i] = 0;
}
else {
int next_node = this->nodes[0].next_idx[i];
this->nodes[next_node].next_idx[FAIL] = 0;
qu.push(next_node);
}
}
while (qu.size()) {
int node_idx = qu.front();
qu.pop();
int fail_idx = this->nodes[node_idx].next_idx[FAIL];
suf_cnt[node_idx] += suf_cnt[fail_idx]; //
// cc
// https://jetbead.hatenablog.com/entry/20121027/1351317982
for (int c = 0; c < char_size; c++) {
if (this->nodes[node_idx].next_idx[c] == -1) {
this->nodes[node_idx].next_idx[c] = move(fail_idx, c + initial_char);
continue;
}
int next_node = this->nodes[node_idx].next_idx[c];
this->nodes[next_node].next_idx[FAIL] = this->nodes[fail_idx].next_idx[c];
qu.push(next_node);
}
}
}
// sO(|s|)
ll match(string s) {
assert(is_built);
ll res = 0;
int node_idx = 0;
for (int i = 0; i < s.size(); i++) {
node_idx = move(node_idx, s[i]);
res += suf_cnt[node_idx];
}
return res;
}
// s
vl frequency(string s) {
assert(is_built);
vl num(this->nodes.size());
int node_idx = 0;
for (int i = 0; i < s.size(); i++) {
node_idx = move(node_idx, s[i]);
num[node_idx]++;
}
queue<int> qu;
qu.push(0);
vi path;
while (qu.size()) {
int node_idx = qu.front();
qu.pop();
path.push_back(node_idx);
for (int c: this->nodes[node_idx].exist_char) {
qu.push(this->nodes[node_idx].next_idx[c]);
}
}
vl res(this->strs.size());
for (int i = (int)path.size() - 1; i >= 0; i--) {
int node_idx = path[i];
for (int u: this->nodes[node_idx].state_idx) {
res[u] += num[node_idx];
}
num[move(node_idx, FAIL + initial_char)] += num[node_idx];
}
return res;
}
};
signed main() {
int n;
cin >> n;
ll l, r;
cin >> l >> r;
vl fib(2);
fib[0] = 1;
fib[1] = 2;
while (fib.back() <= r) {
ll x = fib.back(), y = fib[(int)fib.size() - 2];
fib.push_back(x + y);
}
AhoCorasick<10, '0'> aho;
for (ll x: fib) {
if (l <= x and x <= r) {
string temp = to_string(x);
aho.add(temp);
}
}
aho.build();
vll dp(n + 1, vl(aho.size()));
dp[0][0] = 1;
rep (i, n) {
rep (j, aho.size()) {
if (dp[i][j] == 0) continue;
for (char add = '0'; add <= '9'; add++) {
int nj = aho.move(j, add);
if (aho.suf_cnt[nj] != 0) continue;
(dp[i + 1][nj] += dp[i][j]) %= MOD;
}
}
}
ll ans = 0;
rep (i, aho.size()) ans += dp[n][i];
ans--;
cout << ans % MOD << endl;
}
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