Compilare: main.cpp: In function 'int main()': main.cpp:40:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0; j<S[i].size(); j++) ~^~~~~~~~~~~~ main.cpp:47:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (k==S[i].size()) ~^~~~~~~~~~~~~ main.cpp:65:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0; j<T[i].size(); j++) ~^~~~~~~~~~~~ main.cpp:72:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (k==T[i].size()) ~^~~~~~~~~~~~~