This documentation is automatically generated by online-judge-tools/verification-helper
// competitive-verifier: PROBLEM https://judge.yosupo.jp/problem/matrix_det
#include "../../template/template.hpp"
#include "../../math/combinatorics/montgomery-mod-int.hpp"
#include "../../math/matrix/matrix.hpp"
using mint = modint998244353;
int main() {
int N;
cin >> N;
Matrix< mint > mat(N);
for(int i = 0; i < N; i++) cin >> mat[i];
cout << mat.determinant() << endl;
}
#line 1 "test/verify/yosupo-matrix-det.test.cpp"
// competitive-verifier: PROBLEM https://judge.yosupo.jp/problem/matrix_det
#line 1 "template/template.hpp"
#include<bits/stdc++.h>
using namespace std;
using int64 = long long;
const int64 infll = (1LL << 62) - 1;
const int inf = (1 << 30) - 1;
struct IoSetup {
IoSetup() {
cin.tie(nullptr);
ios::sync_with_stdio(false);
cout << fixed << setprecision(10);
cerr << fixed << setprecision(10);
}
} iosetup;
template< typename T1, typename T2 >
ostream &operator<<(ostream &os, const pair< T1, T2 >& p) {
os << p.first << " " << p.second;
return os;
}
template< typename T1, typename T2 >
istream &operator>>(istream &is, pair< T1, T2 > &p) {
is >> p.first >> p.second;
return is;
}
template< typename T >
ostream &operator<<(ostream &os, const vector< T > &v) {
for(int i = 0; i < (int) v.size(); i++) {
os << v[i] << (i + 1 != v.size() ? " " : "");
}
return os;
}
template< typename T >
istream &operator>>(istream &is, vector< T > &v) {
for(T &in : v) is >> in;
return is;
}
template< typename T1, typename T2 >
inline bool chmax(T1 &a, T2 b) { return a < b && (a = b, true); }
template< typename T1, typename T2 >
inline bool chmin(T1 &a, T2 b) { return a > b && (a = b, true); }
template< typename T = int64 >
vector< T > make_v(size_t a) {
return vector< T >(a);
}
template< typename T, typename... Ts >
auto make_v(size_t a, Ts... ts) {
return vector< decltype(make_v< T >(ts...)) >(a, make_v< T >(ts...));
}
template< typename T, typename V >
typename enable_if< is_class< T >::value == 0 >::type fill_v(T &t, const V &v) {
t = v;
}
template< typename T, typename V >
typename enable_if< is_class< T >::value != 0 >::type fill_v(T &t, const V &v) {
for(auto &e : t) fill_v(e, v);
}
template< typename F >
struct FixPoint : F {
explicit FixPoint(F &&f) : F(forward< F >(f)) {}
template< typename... Args >
decltype(auto) operator()(Args &&... args) const {
return F::operator()(*this, forward< Args >(args)...);
}
};
template< typename F >
inline decltype(auto) MFP(F &&f) {
return FixPoint< F >{forward< F >(f)};
}
#line 4 "test/verify/yosupo-matrix-det.test.cpp"
#line 2 "math/combinatorics/montgomery-mod-int.hpp"
template< uint32_t mod_, bool fast = false >
struct MontgomeryModInt {
private:
using mint = MontgomeryModInt;
using i32 = int32_t;
using i64 = int64_t;
using u32 = uint32_t;
using u64 = uint64_t;
static constexpr u32 get_r() {
u32 ret = mod_;
for (i32 i = 0; i < 4; i++) ret *= 2 - mod_ * ret;
return ret;
}
static constexpr u32 r = get_r();
static constexpr u32 n2 = -u64(mod_) % mod_;
static_assert(r * mod_ == 1, "invalid, r * mod != 1");
static_assert(mod_ < (1 << 30), "invalid, mod >= 2 ^ 30");
static_assert((mod_ & 1) == 1, "invalid, mod % 2 == 0");
u32 x;
public:
MontgomeryModInt(): x{} {}
MontgomeryModInt(const i64 &a)
: x(reduce(u64(fast ? a : (a % mod() + mod())) * n2)) {}
static constexpr u32 reduce(const u64 &b) {
return u32(b >> 32) + mod() - u32((u64(u32(b) * r) * mod()) >> 32);
}
mint &operator+=(const mint &p) {
if (i32(x += p.x - 2 * mod()) < 0) x += 2 * mod();
return *this;
}
mint &operator-=(const mint &p) {
if (i32(x -= p.x) < 0) x += 2 * mod();
return *this;
}
mint &operator*=(const mint &p) {
x = reduce(u64(x) * p.x);
return *this;
}
mint &operator/=(const mint &p) {
*this *= p.inv();
return *this;
}
mint operator-() const { return mint() - *this; }
mint operator+(const mint &p) const { return mint(*this) += p; }
mint operator-(const mint &p) const { return mint(*this) -= p; }
mint operator*(const mint &p) const { return mint(*this) *= p; }
mint operator/(const mint &p) const { return mint(*this) /= p; }
bool operator==(const mint &p) const {
return (x >= mod() ? x - mod() : x) == (p.x >= mod() ? p.x - mod() : p.x);
}
bool operator!=(const mint &p) const {
return (x >= mod() ? x - mod() : x) != (p.x >= mod() ? p.x - mod() : p.x);
}
u32 val() const {
u32 ret = reduce(x);
return ret >= mod() ? ret - mod() : ret;
}
mint pow(u64 n) const {
mint ret(1), mul(*this);
while (n > 0) {
if (n & 1) ret *= mul;
mul *= mul;
n >>= 1;
}
return ret;
}
mint inv() const {
return pow(mod() - 2);
}
friend ostream &operator<<(ostream &os, const mint &p) {
return os << p.val();
}
friend istream &operator>>(istream &is, mint &a) {
i64 t;
is >> t;
a = mint(t);
return is;
}
static constexpr u32 mod() { return mod_; }
};
template< uint32_t mod >
using modint = MontgomeryModInt< mod >;
using modint998244353 = modint< 998244353 >;
using modint1000000007 = modint< 1000000007 >;
#line 6 "test/verify/yosupo-matrix-det.test.cpp"
#line 1 "math/matrix/matrix.hpp"
template< class T >
struct Matrix {
vector< vector< T > > A;
Matrix() {}
Matrix(size_t n, size_t m) : A(n, vector< T >(m, 0)) {}
Matrix(size_t n) : A(n, vector< T >(n, 0)) {};
size_t size() const {
if(A.empty()) return 0;
assert(A.size() == A[0].size());
return A.size();
}
size_t height() const {
return (A.size());
}
size_t width() const {
return (A[0].size());
}
inline const vector< T > &operator[](int k) const {
return (A.at(k));
}
inline vector< T > &operator[](int k) {
return (A.at(k));
}
static Matrix I(size_t n) {
Matrix mat(n);
for(int i = 0; i < n; i++) mat[i][i] = 1;
return (mat);
}
Matrix &operator+=(const Matrix &B) {
size_t n = height(), m = width();
assert(n == B.height() && m == B.width());
for(int i = 0; i < n; i++)
for(int j = 0; j < m; j++)
(*this)[i][j] += B[i][j];
return (*this);
}
Matrix &operator-=(const Matrix &B) {
size_t n = height(), m = width();
assert(n == B.height() && m == B.width());
for(int i = 0; i < n; i++)
for(int j = 0; j < m; j++)
(*this)[i][j] -= B[i][j];
return (*this);
}
Matrix &operator*=(const Matrix &B) {
size_t n = height(), m = B.width(), p = width();
assert(p == B.height());
vector< vector< T > > C(n, vector< T >(m, 0));
for(int i = 0; i < n; i++)
for(int j = 0; j < m; j++)
for(int k = 0; k < p; k++)
C[i][j] = (C[i][j] + (*this)[i][k] * B[k][j]);
A.swap(C);
return (*this);
}
Matrix &operator^=(long long k) {
Matrix B = Matrix::I(height());
while(k > 0) {
if(k & 1) B *= *this;
*this *= *this;
k >>= 1LL;
}
A.swap(B.A);
return (*this);
}
Matrix operator+(const Matrix &B) const {
return (Matrix(*this) += B);
}
Matrix operator-(const Matrix &B) const {
return (Matrix(*this) -= B);
}
Matrix operator*(const Matrix &B) const {
return (Matrix(*this) *= B);
}
Matrix operator^(const long long k) const {
return (Matrix(*this) ^= k);
}
friend ostream &operator<<(ostream &os, Matrix &p) {
size_t n = p.height(), m = p.width();
for(int i = 0; i < n; i++) {
os << "[";
for(int j = 0; j < m; j++) {
os << p[i][j] << (j + 1 == m ? "]\n" : ",");
}
}
return (os);
}
T determinant() {
Matrix B(*this);
assert(width() == height());
T ret = 1;
for(int i = 0; i < width(); i++) {
int idx = -1;
for(int j = i; j < width(); j++) {
if(B[j][i] != 0) idx = j;
}
if(idx == -1) return (0);
if(i != idx) {
ret *= -1;
swap(B[i], B[idx]);
}
ret *= B[i][i];
T vv = B[i][i];
for(int j = 0; j < width(); j++) {
B[i][j] /= vv;
}
for(int j = i + 1; j < width(); j++) {
T a = B[j][i];
for(int k = 0; k < width(); k++) {
B[j][k] -= B[i][k] * a;
}
}
}
return (ret);
}
};
#line 8 "test/verify/yosupo-matrix-det.test.cpp"
using mint = modint998244353;
int main() {
int N;
cin >> N;
Matrix< mint > mat(N);
for(int i = 0; i < N; i++) cin >> mat[i];
cout << mat.determinant() << endl;
}
Env | Name | Status | Elapsed | Memory |
---|---|---|---|---|
g++ | example_00 | AC | 6 ms | 4 MB |
g++ | example_01 | AC | 6 ms | 4 MB |
g++ | example_02 | AC | 6 ms | 4 MB |
g++ | lowrank_max_random_00 | AC | 117 ms | 5 MB |
g++ | lowrank_max_random_01 | AC | 104 ms | 5 MB |
g++ | lowrank_max_random_02 | AC | 135 ms | 5 MB |
g++ | lowrank_max_random_03 | AC | 103 ms | 5 MB |
g++ | lowrank_max_random_04 | AC | 119 ms | 5 MB |
g++ | max_random_00 | AC | 143 ms | 5 MB |
g++ | max_random_01 | AC | 144 ms | 5 MB |
g++ | max_random_02 | AC | 145 ms | 5 MB |
g++ | max_random_03 | AC | 140 ms | 5 MB |
g++ | max_random_04 | AC | 142 ms | 5 MB |
g++ | perm_max_random_00 | AC | 136 ms | 5 MB |
g++ | perm_max_random_01 | AC | 136 ms | 5 MB |
g++ | perm_max_random_02 | AC | 137 ms | 5 MB |
g++ | perm_max_random_03 | AC | 132 ms | 5 MB |
g++ | perm_max_random_04 | AC | 136 ms | 5 MB |
g++ | random_00 | AC | 16 ms | 4 MB |
g++ | random_01 | AC | 19 ms | 4 MB |
g++ | random_02 | AC | 8 ms | 4 MB |
g++ | random_03 | AC | 18 ms | 4 MB |
g++ | random_04 | AC | 6 ms | 4 MB |
g++ | signed_overflow_00 | AC | 6 ms | 4 MB |
g++ | unsigned_overflow_00 | AC | 6 ms | 4 MB |
clang++ | example_00 | AC | 6 ms | 4 MB |
clang++ | example_01 | AC | 6 ms | 4 MB |
clang++ | example_02 | AC | 6 ms | 4 MB |
clang++ | lowrank_max_random_00 | AC | 65 ms | 5 MB |
clang++ | lowrank_max_random_01 | AC | 58 ms | 5 MB |
clang++ | lowrank_max_random_02 | AC | 74 ms | 5 MB |
clang++ | lowrank_max_random_03 | AC | 57 ms | 5 MB |
clang++ | lowrank_max_random_04 | AC | 64 ms | 5 MB |
clang++ | max_random_00 | AC | 81 ms | 5 MB |
clang++ | max_random_01 | AC | 82 ms | 5 MB |
clang++ | max_random_02 | AC | 82 ms | 5 MB |
clang++ | max_random_03 | AC | 79 ms | 5 MB |
clang++ | max_random_04 | AC | 80 ms | 5 MB |
clang++ | perm_max_random_00 | AC | 73 ms | 5 MB |
clang++ | perm_max_random_01 | AC | 74 ms | 5 MB |
clang++ | perm_max_random_02 | AC | 74 ms | 5 MB |
clang++ | perm_max_random_03 | AC | 72 ms | 5 MB |
clang++ | perm_max_random_04 | AC | 73 ms | 5 MB |
clang++ | random_00 | AC | 14 ms | 4 MB |
clang++ | random_01 | AC | 15 ms | 4 MB |
clang++ | random_02 | AC | 8 ms | 4 MB |
clang++ | random_03 | AC | 15 ms | 4 MB |
clang++ | random_04 | AC | 6 ms | 4 MB |
clang++ | signed_overflow_00 | AC | 6 ms | 4 MB |
clang++ | unsigned_overflow_00 | AC | 6 ms | 4 MB |