Compilare: main.cpp: In function 'int main()': main.cpp:42:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int j = 0; j < arb[i].size(); j++) ~~^~~~~~~~~~~~~~~ In file included from main.cpp:4:0: main.cpp: In function 'int query(int, int)': main.cpp:91:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] assert (offset/length < arb[pow].size()); ~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~