Compilare: main.cpp: In function 'Matrix operator*(const Matrix&, const Matrix&)': main.cpp:21:23: warning: comparison of integer expressions of different signedness: 'int' and 'const size_t' {aka 'const long unsigned int'} [-Wsign-compare] 21 | for (int i = 0; i < a.n; i++) { | ~~^~~~~ main.cpp:22:25: warning: comparison of integer expressions of different signedness: 'int' and 'const size_t' {aka 'const long unsigned int'} [-Wsign-compare] 22 | for (int k = 0; k < a.m; k++) { | ~~^~~~~ main.cpp:23:27: warning: comparison of integer expressions of different signedness: 'int' and 'const size_t' {aka 'const long unsigned int'} [-Wsign-compare] 23 | for (int j = 0; j < b.m; j++) { | ~~^~~~~ main.cpp: In function 'void print(const Matrix&)': main.cpp:39:23: warning: comparison of integer expressions of different signedness: 'int' and 'const size_t' {aka 'const long unsigned int'} [-Wsign-compare] 39 | for (int i = 0; i < a.n; i++) { | ~~^~~~~ main.cpp:40:25: warning: comparison of integer expressions of different signedness: 'int' and 'const size_t' {aka 'const long unsigned int'} [-Wsign-compare] 40 | for (int j = 0; j < a.m; j++) { | ~~^~~~~ main.cpp: In function 'Matrix pow(const Matrix&, long long int)': main.cpp:51:22: warning: comparison of integer expressions of different signedness: 'int' and 'const size_t' {aka 'const long unsigned int'} [-Wsign-compare] 51 | for(int i = 0; i < a.n; i++){ | ~~^~~~~