Compilare: main.cpp: In function 'int main()': main.cpp:25:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 25 | if(xst<mat[lin].size()) | ~~~^~~~~~~~~~~~~~~~ main.cpp:28:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 28 | if(xdr>=mat[lin].size()) | ~~~^~~~~~~~~~~~~~~~~ main.cpp:37:27: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 37 | if(mat[lin].size()<=c) | ~~~~~~~~~~~~~~~^~~