Compilare: main.cpp: In function 'int main()': main.cpp:69:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(l1 < nums[lq].size() && l2 < nums[rq].size()) ~~~^~~~~~~~~~~~~~~~~ main.cpp:69:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(l1 < nums[lq].size() && l2 < nums[rq].size()) ~~~^~~~~~~~~~~~~~~~~