Compilare: main.cpp: In function 'int main()': main.cpp:34:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0; j<s.size(); ++j) ~^~~~~~~~~ main.cpp:37:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(m[k].size()<med) ~~~~~~~~~~~^~~~ main.cpp:44:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(t+med-1>=m[k].size()) ~~~~~~~^~~~~~~~~~~~~