Compilare: user.cpp: In function ‘int main()’: user.cpp:66:29: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < sol.size() && i <= 999; ++ i) ^ user.cpp:15:17: warning: variable ‘cnt’ set but not used [-Wunused-but-set-variable] int pos, i, cnt; ^ user.cpp:50:20: warning: ‘pos’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(z[i - pos] + i <= right) ^ /tmp/ccWZS61X.o: In function `main': user.cpp:(.text.startup+0x4e): warning: the `gets' function is dangerous and should not be used.