結果
| 問題 |
No.3243 Multiplication 8 1
|
| コンテスト | |
| ユーザー |
遭難者
|
| 提出日時 | 2025-07-07 14:15:57 |
| 言語 | C++17 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 86 ms / 2,000 ms |
| コード長 | 4,721 bytes |
| コンパイル時間 | 4,499 ms |
| コンパイル使用メモリ | 257,760 KB |
| 実行使用メモリ | 7,844 KB |
| 最終ジャッジ日時 | 2025-07-10 22:22:49 |
| 合計ジャッジ時間 | 4,510 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| sample | AC * 1 |
| other | AC * 4 |
ソースコード
#include <bits/stdc++.h>
using namespace std;
using std::cerr;
using std::cin;
using std::cout;
#if __has_include(<atcoder/all>)
#include <atcoder/all>
using mint = atcoder::modint998244353;
istream &operator>>(istream &is, mint &a) {
int t;
is >> t;
a = t;
return is;
}
ostream &operator<<(ostream &os, mint a) { return os << a.val(); }
#endif
typedef long double ld;
#define long long long
#define uint unsigned int
#define ull unsigned long
#define overload3(a, b, c, name, ...) name
#define rep3(i, a, b) for (int i = (a); i < (b); i++)
#define rep2(i, n) rep3(i, 0, n)
#define rep1(n) rep2(i, n)
#define rep(...) overload3(__VA_ARGS__, rep3, rep2, rep1)(__VA_ARGS__)
#define per3(i, a, b) for (int i = (b) - 1; i >= (a); i--)
#define per2(i, n) per3(i, 0, n)
#define per1(n) per2(i, n)
#define per(...) overload3(__VA_ARGS__, per3, per2, per1)(__VA_ARGS__)
#define all(a) a.begin(), a.end()
#define UNIQUE(a) \
sort(all(a)); \
a.erase(unique(all(a)), a.end())
#define sz(a) (int)a.size()
#define vec vector
#ifndef DEBUG
#define cerr \
if (0) \
cerr
// #undef assert
// #define assert(...) void(0)
#undef endl
#define endl '\n'
#endif
template <typename T> ostream &operator<<(ostream &os, vector<T> a) {
const int n = a.size();
rep(i, n) {
os << a[i];
if (i + 1 != n)
os << " ";
}
return os;
}
template <typename T, size_t n>
ostream &operator<<(ostream &os, array<T, n> a) {
rep(i, n) {
os << a[i];
if (i + 1 != n)
os << " ";
}
return os;
}
template <typename T> istream &operator>>(istream &is, vector<T> &a) {
for (T &i : a)
is >> i;
return is;
}
template <typename T, typename S> bool chmin(T &x, S y) {
if ((T)y < x) {
x = (T)y;
return true;
}
return false;
}
template <typename T, typename S> bool chmax(T &x, S y) {
if (x < (T)y) {
x = (T)y;
return true;
}
return false;
}
template <typename T> void operator++(vector<T> &a) {
for (T &i : a)
++i;
}
template <typename T> void operator--(vector<T> &a) {
for (T &i : a)
--i;
}
template <typename T> void operator++(vector<T> &a, int) {
for (T &i : a)
i++;
}
template <typename T> void operator--(vector<T> &a, int) {
for (T &i : a)
i--;
}
template <typename T> struct M {
vector<vector<T>> a;
int n, m;
M(int n, int m) : n(n), m(m), a(n, vector<T>(m)) {}
M(int n = 0) : M<T>(n, n) {}
vector<T> &operator[](int k) { return a[k]; }
const vector<T> &operator[](int k) const { return a[k]; }
static M I(int n) {
M mat(n);
rep(i, n) mat[i][i] = 1;
return mat;
}
M &operator+=(const M &b) {
rep(i, n) rep(j, m)(*this)[i][j] += b[i][j];
return *this;
}
M &operator-=(const M &b) {
rep(i, n) rep(j, m)(*this)[i][j] -= b[i][j];
return *this;
}
M &operator*=(const M &b) {
int l = b.m;
vector c(n, vector<T>(l));
rep(i, n) rep(j, m) rep(k, l) c[i][k] += (*this)[i][j] * b[j][k];
a.swap(c);
return *this;
}
M &operator^=(long k) {
M b = M::I(n);
while (k) {
if (k & 1)
b *= *this;
*this *= *this;
k >>= 1;
}
a.swap(b.a);
return *this;
}
M operator+(const M &b) const { return (M(*this) += b); }
M operator-(const M &b) const { return (M(*this) -= b); }
M operator*(const M &b) const { return (M(*this) *= b); }
M operator^(const M &b) const { return (M(*this) ^= b); }
};
template <typename T> pair<int, T> GaussElimination(M<T> &a, bool LE = false) {
int n = a.n, m = a.m;
int rank = 0, je = LE ? m - 1 : m;
mint det = 1;
rep(j, je) {
int idx = -1;
rep(i, rank, n) {
if (a[i][j].x) {
idx = i;
break;
}
}
if (idx == -1) {
det = 0;
continue;
}
if (rank != idx) {
det = -det;
swap(a[rank], a[idx]);
}
det *= a[rank][j];
if (LE && a[rank][j].x != 1) {
mint coeff = a[rank][j].inv();
rep(k, j, m) a[rank][k] *= coeff;
}
int is = LE ? 0 : rank + 1;
rep(i, is, n) {
if (i == rank)
continue;
if (a[i][j].x) {
mint coeff = a[i][j] / a[rank][j];
rep(k, j, m) a[i][k] -= a[rank][k] * coeff;
}
}
rank++;
}
return make_pair(rank, det);
}
void solve() {
M<mint> a(7);
rep(i, 6) {
a[i][i] = 1;
a[i ^ 1][i] = 1;
if (i < 4) {
a[i + 2][i] = 1;
a[(i + 2) ^ 1][i] = 1;
}
}
a[6][4] = a[6][5] = 1;
a[0][4] = a[0][5] = 1;
a[6][6] = a[0][6] = 1;
long n;
cin >> n;
a ^= n;
cout << a[0][0] - mint(2).pow(n - 1) << endl;
}
int main() {
// srand((unsigned)time(NULL));
cin.tie(nullptr);
ios::sync_with_stdio(false);
cout << fixed << setprecision(20);
int t = 1;
cin >> t;
while (t--)
solve();
}
遭難者