Compilare: user.cpp: In function ‘int main()’: user.cpp:18:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<s.size();i++) ^ user.cpp:35:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<s.size();i++) ^ user.cpp:50:11: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(d==-1&&l==lmi) ^ user.cpp:55:11: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(d==-1&&l==lma) ^