Compilare: main.cpp: In function 'int main()': main.cpp:33:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<s.size(); ++j) ~^~~~~~~~~ main.cpp:36:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(m[k].size()<med) ~~~~~~~~~~~^~~~ main.cpp:52:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(t+med-1>m[k].size()) ~~~~~~~^~~~~~~~~~~~