Compilare: main.cpp: In function 'int main()': main.cpp:82:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<C.size();i++) ~^~~~~~~~~ main.cpp:83:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<C[i].size();j++) ~^~~~~~~~~~~~ main.cpp:85:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<C.size();i++) ~^~~~~~~~~ main.cpp:87:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<C.size();i++) ~^~~~~~~~~ main.cpp:88:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(C[i].size()==Max) ~~~~~~~~~~~^~~~~