Compilare: user.cpp: In function ‘void ty1()’: user.cpp:56:26: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (ivec=0; ivec<lst[nodcrt].size(); ++ivec) ^ user.cpp: In function ‘void read()’: user.cpp:90:35: warning: format ‘%s’ expects argument of type ‘char*’, but argument 4 has type ‘char (*)[5]’ [-Wformat=] scanf ("%d%d%s",&x,&y,&sir); ^ user.cpp:78:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ninjago.in","r",stdin); ^ user.cpp:79:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ninjago.out","w",stdout); ^ user.cpp:80:37: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d%d",&ty,&nnod,&nmuc); ^ user.cpp:90:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ("%d%d%s",&x,&y,&sir); ^