Inverse Matrix (verify/linalg/inv.test.cpp)

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• Last update: 2025-12-30 00:27:16+01:00
• Problem: https://judge.yosupo.jp/problem/inverse_matrix

Depends on

• cp-algo/linalg/matrix.hpp
• cp-algo/linalg/vector.hpp
• cp-algo/math/common.hpp
• cp-algo/number_theory/modint.hpp
• cp-algo/random/rng.hpp
• cp-algo/util/big_alloc.hpp
• cp-algo/util/checkpoint.hpp
• cp-algo/util/simd.hpp

Code

// @brief Inverse Matrix
#define PROBLEM "https://judge.yosupo.jp/problem/inverse_matrix"
#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2")
#include <bits/stdc++.h>
#include "cp-algo/linalg/matrix.hpp"

using namespace std;
using namespace cp_algo::linalg;
using namespace cp_algo::math;

const int64_t mod = 998244353;

void solve() {
    int n;
    cin >> n;
    matrix<modint<mod>> a(n, n);
    a.read();
    auto [d, ai] = a.inv();
    if(d == 0) {
        cout << -1 << "\n";
    } else {
        ai.print();
    }
}

signed main() {
    //freopen("input.txt", "r", stdin);
    ios::sync_with_stdio(0);
    cin.tie(0);
    int t = 1;
    while(t--) {
        solve();
    }
}

Traceback (most recent call last):
  File "/home/runner/.local/lib/python3.12/site-packages/competitive_verifier/oj_resolve/resolver.py", line 181, in resolve
    bundled_code = language.bundle(path, basedir=basedir)
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/runner/.local/lib/python3.12/site-packages/competitive_verifier/oj/verify/languages/cplusplus.py", line 252, in bundle
    bundler.update(path)
  File "/home/runner/.local/lib/python3.12/site-packages/competitive_verifier/oj/verify/languages/cplusplus_bundle.py", line 327, in update
    assert len(lines) == len(uncommented_lines)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
AssertionError

Test cases

Env	Name	Status	Elapsed	Memory
g++	anti55588_00	AC	5 ms	4 MB
g++	example_00	AC	4 ms	4 MB
g++	example_01	AC	4 ms	4 MB
g++	example_02	AC	4 ms	4 MB
g++	lowrank_max_random_00	AC	64 ms	11 MB
g++	lowrank_max_random_01	AC	61 ms	11 MB
g++	lowrank_max_random_02	AC	65 ms	11 MB
g++	lowrank_max_random_03	AC	59 ms	11 MB
g++	lowrank_max_random_04	AC	61 ms	11 MB
g++	max_random_00	AC	81 ms	11 MB
g++	max_random_01	AC	82 ms	11 MB
g++	max_random_02	AC	87 ms	11 MB
g++	max_random_03	AC	83 ms	11 MB
g++	max_random_04	AC	82 ms	11 MB
g++	perm_max_random_00	AC	38 ms	12 MB
g++	perm_max_random_01	AC	36 ms	12 MB
g++	perm_max_random_02	AC	37 ms	12 MB
g++	perm_max_random_03	AC	36 ms	12 MB
g++	perm_max_random_04	AC	36 ms	12 MB
g++	random_00	AC	12 ms	5 MB
g++	random_01	AC	13 ms	5 MB
g++	random_02	AC	6 ms	4 MB
g++	random_03	AC	12 ms	5 MB
g++	random_04	AC	5 ms	4 MB
g++	signed_overflow_00	AC	4 ms	4 MB
g++	unsigned_overflow_00	AC	4 ms	4 MB

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