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View Compilation Error

0_0_24882830_32425.cpp: In function 'int main()':
0_0_24882830_32425.cpp:183:21: error: no matching function for call to 'mat::mat(ll&, int)'
   mat s(n,n),ans(n,1);
                     ^
0_0_24882830_32425.cpp:183:21: note: candidates are:
0_0_24882830_32425.cpp:29:2: note: mat::mat(ll&, ll&)
  mat(ll& R,ll& C){
  ^
0_0_24882830_32425.cpp:29:2: note:   no known conversion for argument 2 from 'int' to 'll& {aka long long int&}'
0_0_24882830_32425.cpp:26:8: note: constexpr mat::mat(const mat&)
 struct mat {
        ^
0_0_24882830_32425.cpp:26:8: note:   candidate expects 1 argument, 2 provided
0_0_24882830_32425.cpp:26:8: note: constexpr mat::mat(mat&&)
0_0_24882830_32425.cpp:26:8: note:   candidate expects 1 argument, 2 provided


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