注释掉的代码 WA。

ins 函数中注释部分和正常部分是不是只有精度的差别，如果是，为什么差这么多啊

#include <bits/stdc++.h>

using namespace std;

using ubt = long long;
using dub = long double;
#define IL inline
#define vec vector
#define bg begin
#define eb emplace_back
#define emp emplace
#define fi first
#define se second
using pii = pair<int, int>;

IL int _R() { int x; cin >> x; return x; }

const dub eps = 1e-6;
const int N = 500;
const int maxN = N + 3;

int n, m;

struct node {
  array<dub, maxN> A;
  auto &operator [] (int i) { return A.at(i); }
  int c;
} a[maxN];

node d[maxN];
bool ins(auto A) {
  for (int i = 1; i <= m; i++)
    if (fabs(A[i]) >= eps) {
      if (fabs(d[i][i]) < eps)
        return d[i] = A, true;

      dub T = A[i] / d[i][i];
      A[i] = 0;
      for (int j = i + 1; j <= m; j++)
        A[j] -= d[i][j] * T;
      // dub T = d[i][i] / A[i];
      // A[i] = 0;
      // for (int j = i + 1; j <= m; j++)
      //   A[j] = A[j] * T - d[i][j];
    }
  return false;
}

int main() {
  cin.tie(nullptr)->sync_with_stdio(false);
   
  n = _R(), m = _R();
  for (int i = 1; i <= n; i++)
    for (int j = 1; j <= m; j++)
      a[i][j] = _R();
  for (int i = 1; i <= n; i++)
    a[i].c = _R();
  sort(a + 1, a + n + 1, [](const auto &A, const auto &B) {
    return A.c < B.c;
  });

  int cnt = 0, ans = 0;
  for (int i = 1; i <= n; i++)
    if (ins(a[i]))
      cnt++, ans += a[i].c;
  cout << cnt << ' ' << ans << '\n';
}