Compilare: user.cpp: In function ‘int main()’: user.cpp:5:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] #define Minim(x, y) (x <= y ? x : y) ^ user.cpp:53:29: note: in expansion of macro ‘Minim’ for (int i = 0; i < Minim(sol.size(), 1000u); i++) ^ user.cpp:19:21: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(S1 + 1); M = strlen(S1 + 1); ^ user.cpp:20:21: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(S2 + 1); N = strlen(S2 + 1); ^ /tmp/ccjbp2nU.o: In function `main': user.cpp:(.text.startup+0x1c): warning: the `gets' function is dangerous and should not be used.