結果
| 問題 |
No.2156 ぞい文字列
|
| コンテスト | |
| ユーザー |
 dyktr_06
|
| 提出日時 | 2022-12-09 22:02:30 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 2 ms / 2,000 ms |
| コード長 | 5,645 bytes |
| コンパイル時間 | 2,231 ms |
| コンパイル使用メモリ | 184,796 KB |
| 実行使用メモリ | 5,248 KB |
| 最終ジャッジ日時 | 2024-10-14 21:58:22 |
| 合計ジャッジ時間 | 2,738 ms |
|
ジャッジサーバーID （参考情報） |
judge5 / judge4 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 4 |
| other | AC * 16 |
コンパイルメッセージ
main.cpp: In function 'void in(T& ...)':
main.cpp:30:55: warning: fold-expressions only available with '-std=c++17' or '-std=gnu++17' [-Wc++17-extensions]
30 | template<class... T> void in(T&... a){ (cin >> ... >> a); }
| ^
main.cpp: In function 'void out(const T&, const Ts& ...)':
main.cpp:32:112: warning: fold-expressions only available with '-std=c++17' or '-std=gnu++17' [-Wc++17-extensions]
32 | template<class T, class... Ts> void out(const T& a, const Ts&... b){ cout << a; (cout << ... << (cout << ' ', b)); cout << '\n'; }
| ^
ソースコード
#pragma GCC optimize("O3")
#include <bits/stdc++.h>
using namespace std;
#define rep(i,n) for(int i = 0; i < (int)(n); ++i)
#define rrep(i,n) for(int i = (int)(n) - 1; i >= 0; --i)
#define ALL(a) a.begin(), a.end()
#define Sort(a) sort(a.begin(), a.end())
#define RSort(a) sort(a.rbegin(), a.rend())
typedef long long int ll;
typedef long double ld;
typedef vector<int> vi;
typedef vector<long long> vll;
typedef vector<char> vc;
typedef vector<string> vst;
typedef vector<double> vd;
typedef pair<long long, long long> P;
const long long INF = 0x1fffffffffffffff;
const long long MOD = 998244353;
const long double PI = acos(-1);
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
template<class T, class U> inline T vin(T& vec, U n) { vec.resize(n); for(int i = 0; i < (int) n; ++i) cin >> vec[i]; return vec; }
template<class T> inline void vout(T vec, string s = "\n"){ for(auto x : vec) cout << x << s; }
template<class... T> void in(T&... a){ (cin >> ... >> a); }
void out(){ cout << '\n'; }
template<class T, class... Ts> void out(const T& a, const Ts&... b){ cout << a; (cout << ... << (cout << ' ', b)); cout << '\n'; }
template<class T, class U> void inGraph(vector<vector<T>>& G, U n, U m, bool directed = false){ G.resize(n); for(int i = 0; i < m; i++){ int a, b; cin >> a >> b; a--, b--; G[a].push_back(b); if(!directed) G[b].push_back(a); } }
ll n;
template <typename T>
T modinv(T a, T m){
T b = m, u = 1, v = 0;
while(b){
T t = a / b;
a -= t * b; swap(a, b);
u -= t * v; swap(u, v);
}
u %= m;
if (u < 0) u += m;
return u;
}
template <typename T>
T modarithmeticsum(T a, T d, T n, T m){
a %= m, n %= m, d %= m;
T b = (n - 1) * d % m;
return n * (a * 2 + b) % m * modinv((T) 2, m) % m;
}
template <long long Modulus>
struct ModInt{
long long val;
constexpr ModInt(const long long &_val = 0) noexcept : val(_val) {
normalize();
}
void normalize(){
val = (val % Modulus + Modulus) % Modulus;
}
inline ModInt& operator+=(const ModInt& rhs) noexcept {
if(val += rhs.val, val >= Modulus) val -= Modulus;
return *this;
}
inline ModInt& operator-=(const ModInt& rhs) noexcept {
if(val -= rhs.val, val < 0) val += Modulus;
return *this;
}
inline ModInt& operator*=(const ModInt& rhs) noexcept {
val = val * rhs.val % Modulus;
return *this;
}
inline ModInt& operator/=(const ModInt& rhs) noexcept {
val = val * inv(rhs.val).val % Modulus;
return *this;
}
inline ModInt& operator++() noexcept {
if(++val >= Modulus) val -= Modulus;
return *this;
}
inline ModInt operator++(int) noexcept {
ModInt t = val;
if(++val >= Modulus) val -= Modulus;
return t;
}
inline ModInt& operator--() noexcept {
if(--val < 0) val += Modulus;
return *this;
}
inline ModInt operator--(int) noexcept {
ModInt t = val;
if(--val < 0) val += Modulus;
return t;
}
inline ModInt operator-() const noexcept { return (Modulus - val) % Modulus; }
inline ModInt inv(void) const { return inv(val); }
ModInt inv(const long long& n) const {
long long a = n, b = Modulus, u = 1, v = 0;
while(b){
long long t = a / b;
a -= t * b; swap(a, b);
u -= t * v; swap(u, v);
}
u %= Modulus;
if(u < 0) u += Modulus;
return u;
}
friend inline ModInt operator+(const ModInt& lhs, const ModInt& rhs) noexcept { return ModInt(lhs) += rhs; }
friend inline ModInt operator-(const ModInt& lhs, const ModInt& rhs) noexcept { return ModInt(lhs) -= rhs; }
friend inline ModInt operator*(const ModInt& lhs, const ModInt& rhs) noexcept { return ModInt(lhs) *= rhs; }
friend inline ModInt operator/(const ModInt& lhs, const ModInt& rhs) noexcept { return ModInt(lhs) /= rhs; }
friend inline bool operator==(const ModInt& lhs, const ModInt& rhs) noexcept { return lhs.val == rhs.val; }
friend inline bool operator!=(const ModInt& lhs, const ModInt& rhs) noexcept { return lhs.val != rhs.val; }
friend inline istream& operator>>(istream& is, ModInt& x) noexcept {
is >> x.val;
x.normalize();
return is;
}
friend inline ostream& operator<<(ostream& os, const ModInt& x) noexcept { return os << x.val; }
};
vector<vector<long long>> mul(vector<vector<long long>> a, vector<vector<long long>> b){
vector<vector<long long>> res((int) a.size(), vector<long long>(b[0].size()));
for(int i = 0; i < (int) a.size(); i++){
for(int j = 0; j < (int) b[0].size(); j++){
for(int k = 0; k < (int) b.size(); k++){
res[i][j] += a[i][k] * b[k][j];
res[i][j] %= MOD;
}
}
}
return res;
}
// 繰り返し二乗法
long long calc(long long n){
vector<vector<long long>> a(2, vector<long long>(2));
a[0][0] = 1; a[0][1] = 1;
a[1][0] = 1; a[1][1] = 0;
vector<vector<long long>> b(2, vector<long long>(2, 0));
for(int i = 0; i < 2; i++) b[i][i] = 1;
while(n > 0){
if(n & 1) b = mul(a, b);
a = mul(a, a);
n >>= 1;
}
return b[1][0];
}
using mint = ModInt<998244353>;
void input(){
in(n);
}
void solve(){
mint ans = calc(n) + calc(n - 1) - 1;
out(ans);
}
int main(){
ios::sync_with_stdio(false);
cin.tie(nullptr);
input();
solve();
}