Compilare: main.cpp: In function 'int main()': main.cpp:39:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0; j<S[i].size(); j++) ~^~~~~~~~~~~~ main.cpp:46:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (k==S[i].size()) ~^~~~~~~~~~~~~ main.cpp:64:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0; j<T[i].size(); j++) ~^~~~~~~~~~~~ main.cpp:71:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (k==T[i].size()) ~^~~~~~~~~~~~~