Compilare: main.cpp: In function 'void verif(long long int)': main.cpp:34:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<v.size(); i++) ~^~~~~~~~~ main.cpp: In function 'int main()': main.cpp:82:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<v.size(); i++) ~^~~~~~~~~ main.cpp:100:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i<v.size(); i++) ~^~~~~~~~~