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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. mt19937_64 rng(chrono::steady_clock::now().time_since_epoch().count());
  5.  
  6. int64_t rnd(int64_t l, int64_t r) {
  7.    return rng() % (r - l + 1) + l;
  8. }
  9.  
  10. int a[500][500];
  11.  
  12. int32_t main() {
  13.   cin.tie(0)->sync_with_stdio(0);
  14.   int n = rnd(2, 10);
  15.   cout << n << '\n';
  16.   for (int i = 1; i <= n; i++)
  17.     for (int j = 1; j <= n; j++)
  18.       cout << (a[i][j] = rnd(-1, 1)) << " \n"[j == n];
  19.   for (int i = 1; i <= n; i++)
  20.     for (int j = 1; j <= n; j++)
  21.       cout << (rnd(0, 1) ? -a[i][j] : a[i][j]) << " \n"[j == n];
  22.   return 0;
  23. }
Success #stdin #stdout 0.01s 5392KB
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stdin
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Standard input is empty
stdout
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2
0 0
-1 0
0 0
1 0
https://ideone.com/ykaGMi
language:
C++14 (clang 8.0)
created:
1 year ago
visibility:
public

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