Compilare: main.cpp: In function 'int main()': main.cpp:61:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < x.size(); ++i){ ~~^~~~~~~~~~ main.cpp:72:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int len = 1; len <= x.size(); ++len){ ~~~~^~~~~~~~~~~ main.cpp:75:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < x.size() - len + 1; ++i){ ~~^~~~~~~~~~~~~~~~~~~~ main.cpp:81:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j = 0; j < vect[hh].size(); j++) ~~^~~~~~~~~~~~~~~~~ main.cpp:54:22: warning: iteration 1002 invokes undefined behavior [-Waggressive-loop-optimizations] prim1_pow[i] = prim1_pow[i - 1] * prim1; ~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~ main.cpp:53:22: note: within this loop for(int i = 1; i <= 1003; ++i){ ~~^~~~~~~