Compilare: main.cpp: In function 'int main()': main.cpp:27:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<v[i].size();j++) ~^~~~~~~~~~~~ main.cpp:89:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<t[i].size();j++) ~^~~~~~~~~~~~ main.cpp:116:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j=0;j<t[i].size();j++) ~^~~~~~~~~~~~