foo.cc: In function 'int main()':
foo.cc:32:9: error: 'cin' was not declared in this scope; did you mean 'std::cin'?
   32 |         cin>>num;
      |         ^~~
      |         std::cin
In file included from stdc++.h:75:
/nix/store/h5kvfrjmpw792v8jg7nrzfkffmn0iyy8-gcc-12.3.0/include/c++/12.3.0/iostream:60:18: note: 'std::cin' declared here
   60 |   extern istream cin;           /// Linked to standard input
      |                  ^~~
foo.cc:57:34: error: invalid operands of types 'int [1455]' and 'int' to binary 'operator*'
   57 |                 int tm = mods[0] * mods[i][l-1] % m;
      |                          ~~~~~~~ ^ ~~~~~~~~~~~~
      |                                |              |
      |                                int [1455]     int
foo.cc:71:42: error: invalid operands of types 'int [1455]' and 'int' to binary 'operator*'
   71 |                         int tm = mods[0] * mods[i][j-1] * mods[j][l-1] % m;
      |                                  ~~~~~~~ ^ ~~~~~~~~~~~~
      |                                        |              |
      |                                        int [1455]     int

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