Compilare: user.cpp: In function ‘void read()’: user.cpp:25:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen ( "dmin.in" , "r" , stdin ) ; ^ user.cpp:26:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ( "%d %d" , &N , &M ) ; ^ user.cpp:29:48: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf ( "%d %d %d" , &x , &y , &cost ) ; // logaritmam costul pentru a nu lucra cu numere mari si pentru ca log(a*b) = log a + log b ^