Compilare: user.cpp: In function ‘int main()’: user.cpp:25:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<S[i].size();++j) ^ user.cpp:29:50: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int q=j;q<S[i].size();++q) ^ user.cpp:45:26: warning: unused variable ‘newL’ [-Wunused-variable] int sol=0,newL=L; ^