Compilare: main.cpp: In function 'int main()': main.cpp:80:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int i = 0; i < v[k].size(); ++i) ~~^~~~~~~~~~~~~ main.cpp:88:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (i < v[k].size() / 2) ~~^~~~~~~~~~~~~~~~~ main.cpp:107:17: warning: unused variable 'd' [-Wunused-variable] int d = distanta(now, i), l = lungime(now, i); ^ main.cpp:107:39: warning: unused variable 'l' [-Wunused-variable] int d = distanta(now, i), l = lungime(now, i); ^