Compilare: main.cpp: In function 'void Dyn()': main.cpp:47:42: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int idx1=0, idx2, i, j; idx1<Odd.size(); ++idx1) { ~~~~^~~~~~~~~~~ main.cpp:46:24: warning: unused variable 'i' [-Wunused-variable] for (int mask = 0, i, j; mask <= lim; ++ mask) ^ main.cpp:46:27: warning: unused variable 'j' [-Wunused-variable] for (int mask = 0, i, j; mask <= lim; ++ mask) ^