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  1. #include <iostream>
  2. #include <vector>
  3.  
  4. using namespace std;
  5.  
  6. int main()
  7. {
  8.     vector< vector<int> > a;
  9.  
  10.     int n;
  11.     cin >> n;
  12.  
  13.     a.reserve(n);
  14.  
  15.     for(int i = 0; i < n; ++i) a[i].reserve(n);
  16.  
  17.     for(int i = 0; i < n; ++i)
  18.         for(int j = 0; j < n; ++j) cin >> a[i][j];
  19.  
  20.     for(int i = 0; i < n; ++i)
  21.     {
  22.         for(int j = 0; j < n; ++j) cout << a[i][j] << " ";
  23.  
  24.         cout << "\n";
  25.     }
  26.  
  27. }
  28.  
  29.  
Success #stdin #stdout 0s 4300KB
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stdin
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2
1 2 3 4
stdout
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https://ideone.com/tQ6t1s
language:
C++14 (gcc 8.3)
created:
6 years ago
visibility:
public

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