Compilare: user.cpp: In function ‘bool cmp(anakin, anakin)’: user.cpp:44:35: warning: statement has no effect [-Wunused-value] a.cost > b.cost ? false : true; ^ user.cpp:45:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:48:12: warning: unused variable ‘j’ [-Wunused-variable] int i, j; ^ user.cpp:51:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d", &N, &M); ^ user.cpp:53:44: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin, "%d %d %d", &x, &y, &c); ^