Compilare: main.cpp: In function 'int main()': main.cpp:39:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=1;j<=s.size();j++) ~^~~~~~~~~~ main.cpp:88:32: warning: 'c' may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<tmin<<" "<<l<<" "<<c<<'\n'; ^~~~ main.cpp:88:24: warning: 'l' may be used uninitialized in this function [-Wmaybe-uninitialized] fout<<tmin<<" "<<l<<" "<<c<<'\n'; ^~~