Compilare: main.cpp: In function 'void Cpy(int, int)': main.cpp:31:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Q[y].size(); ++i) ~~^~~~~~~~~~~~~ main.cpp: In function 'void Search(int)': main.cpp:50:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Q[pos-1].size(); ++i) ~~^~~~~~~~~~~~~~~~~ main.cpp:56:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < query.size(); ++i) ~~^~~~~~~~~~~~~~ main.cpp: In function 'void Read()': main.cpp:75:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < c.size(); ++j) ~~^~~~~~~~~~ main.cpp:80:9: warning: unused variable 'nr' [-Wunused-variable] int nr; ^~