Compilare: user.cpp: In function ‘double Solve()’: user.cpp:59:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k=0;k+1<Sol.size();k++) ^ user.cpp:85:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i+1<Sol.size();i++) ^