Compilare: main.cpp: In function 'void getsol(int)': main.cpp:41:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<v.size();++i){ ~^~~~~~~~~ main.cpp: In function 'int main()': main.cpp:62:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1;i<p.size()-1;++i){ ~^~~~~~~~~~~