Compilare: user.cpp: In function ‘void BFS()’: user.cpp:30:7: warning: unused variable ‘best_so_far’ [-Wunused-variable] int best_so_far = 1 << 30,i; ^ user.cpp: In function ‘int main()’: user.cpp:55:25: warning: format ‘%d’ expects argument of type ‘int*’, but argument 2 has type ‘unsigned char*’ [-Wformat=] scanf("%d%d",d+i,c+i); ^ user.cpp:55:25: warning: format ‘%d’ expects argument of type ‘int*’, but argument 3 has type ‘unsigned char*’ [-Wformat=] user.cpp:49:34: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("zmeu2.in", "r", stdin); ^ user.cpp:51:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&N,&P,&K); ^ user.cpp:55:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",d+i,c+i); ^ user.cpp:61:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&a,&b); ^ user.cpp:69:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("zmeu2.out", "w", stdout); ^