Compilare: main.cpp: In function 'int main()': main.cpp:83:23: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare] 83 | for (int i = 0; i < v.size(); ++i) { | ~~^~~~~~~~~~ main.cpp:65:10: warning: variable 'start' set but not used [-Wunused-but-set-variable] 65 | int c, start; | ^~~~~ main.cpp:78:5: warning: 'c' may be used uninitialized in this function [-Wmaybe-uninitialized] 78 | if (con[i] == c) | ^~