Compilare: user.cpp: In function ‘int main()’: user.cpp:41:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=1; i+1<v.size(); i++) { ^ user.cpp:52:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0; i<sol.size(); i++) if(sol[i] == 0) { p = i; break; } ^ user.cpp:53:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=p; i<sol.size(); i++) g<<sol[i]<<" "; ^