Compilare: main.cpp: In function 'int gasire(long long int, int)': main.cpp:23:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<a[linie].size(); ++i) ~^~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:89:17: warning: variable 'p' set but not used [-Wunused-but-set-variable] int p=gasire(x, j); ^ main.cpp:109:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int x=0; x<a[i].size(); ++x) ~^~~~~~~~~~~~