Compilare: main.cpp: In function 'void bkt(int, int, long long int)': main.cpp:40:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < Muchii[nod].size(); ++i) ~~^~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:83:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v2.size(); ++i) ~~^~~~~~~~~~~ main.cpp:56:6: warning: unused variable 'x' [-Wunused-variable] int x; ^