Compilare: user.cpp: In function ‘int main()’: user.cpp:3:33: warning: integer overflow in expression [-Woverflow] #define INFINIT ( ( 1 << 31 ) - 1 ) ^ user.cpp:48:27: note: in expansion of macro ‘INFINIT’ v[ k ].st = v[ k ].dr = INFINIT; ^ user.cpp:39:42: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin , "%d%d%d" , &n , &k , &m ); ^ user.cpp:41:53: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf( fin , "%d%d" , &v[ i ].st , &v[ i ].dr ); ^