Compilare: user.cpp: In function ‘void Solve()’: user.cpp:43:21: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘long long int’ [-Wformat=] printf("%d", sol); ^ user.cpp: In function ‘void Read()’: user.cpp:18:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d ", &n, &m); ^ user.cpp:22:16: warning: ignoring return value of ‘char* gets(char*)’, declared with attribute warn_unused_result [-Wunused-result] gets(S); ^ /tmp/ccMJAdPg.o: In function `Read()': user.cpp:(.text+0x48): warning: the `gets' function is dangerous and should not be used.