Compilare: main.cpp: In function 'int main()': main.cpp:62:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<C.size();i++) ~^~~~~~~~~ main.cpp:63:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<C[i].size();j++) ~^~~~~~~~~~~~ main.cpp:65:14: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<C.size();i++) ~^~~~~~~~~ main.cpp:67:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int p=0;p<C.size();p++) ~^~~~~~~~~ main.cpp:68:23: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(C[p].size()==Max) ~~~~~~~~~~~^~~~~