Compilare: main.cpp: In function 'int main()': main.cpp:33:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i < v[a].size() && j < v[b].size()) ~~^~~~~~~~~~~~~ main.cpp:33:41: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while (i < v[a].size() && j < v[b].size()) ~~^~~~~~~~~~~~~ main.cpp:48:63: warning: variable 'rez' set but not used [-Wunused-but-set-variable] long long st = -1000000000, dr = 1000000000, mid, rez = 0, sum = 0; ^~~