Compilare: user.cpp: In function ‘int bfs(int, int)’: user.cpp:25:9: warning: unused variable ‘min_cost’ [-Wunused-variable] int min_cost = 0x7fffffff; ^ user.cpp:29:9: warning: unused variable ‘tc’ [-Wunused-variable] int tc = mat[sx][sy]; ^ user.cpp:88:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:95:41: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("distractie.in", "r", stdin); ^ user.cpp:96:43: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("distractie.out", "w", stdout); ^ user.cpp:98:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d", &n, &m); ^ user.cpp:104:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d", &mat[i][j]); ^