Compilare: main.cpp: In function 'int main()': main.cpp:34:20: warning: comparison of integer expressions of different signedness: 'std::vector<int>::size_type' {aka 'long unsigned int'} and 'int' [-Wsign-compare] 34 | while(v.size() < n * m) | ~~~~~~~~~^~~~~~~ main.cpp:41:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 41 | for(int i = 1; i < v.size(); i++) | ~~^~~~~~~~~~