Compilare: user.cpp: In function ‘void precalc()’: user.cpp:15:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (short int i = 1; i <= s.size(); ++i) { ~~^~~~~~~~~~~ user.cpp: In function ‘short int bs(short int, short int)’: user.cpp:23:22: warning: overflow in implicit constant conversion [-Woverflow] short int pas = 1<<16, r(0); ~^~~~ user.cpp:25:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (r + pas <= s.size() && sp[c][r + pas] < val) ~~~~~~~~^~~~~~~~~~~ user.cpp: In function ‘bool ok(short int)’: user.cpp:34:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (short int i = 0; i < str.size(); ++i) { ~~^~~~~~~~~~~~ user.cpp: In function ‘int main()’: user.cpp:51:26: warning: overflow in implicit constant conversion [-Woverflow] short int pas = 1<<16, r(0); ~^~~~