Compilare: main.cpp: In function 'int main()': main.cpp:20:26: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 20 | for(int i = 0; i < n; i++) { | ~~^~~ main.cpp:24:26: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 24 | for(int i = 0; i < m; i++){ | ~~^~~