Compilare: main.cpp: In function 'void build(int, int, int)': main.cpp:28:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(x < aint[nod<<1].size() && y < aint[nod << 1|1].size()) ~~^~~~~~~~~~~~~~~~~~~~~ main.cpp:28:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(x < aint[nod<<1].size() && y < aint[nod << 1|1].size()) ~~^~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:51:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(x < aint[nod<<1].size()) ~~^~~~~~~~~~~~~~~~~~~~~ main.cpp:57:13: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(y < aint[nod<<1|1].size()) ~~^~~~~~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void query(int, int, int, int, int)': main.cpp:71:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(x < xox.size() && y < aint[nod].size()) ~~^~~~~~~~~~~~ main.cpp:71:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(x < xox.size() && y < aint[nod].size()) ~~^~~~~~~~~~~~~~~~~~ main.cpp:94:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(x < xox.size()) ~~^~~~~~~~~~~~ main.cpp:100:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] while(y < aint[nod].size()) ~~^~~~~~~~~~~~~~~~~~