Compilare: main.cpp: In function 'int heap_extract()': main.cpp:5:11: warning: overflow in implicit constant conversion [-Woverflow] #define M 5e9 ^ main.cpp:49:16: note: in expansion of macro 'M' return M; ^ main.cpp: In function 'int main()': main.cpp:96:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i<v[curr].size();i++){ ~^~~~~~~~~~~~~~~