Compilare: user.cpp: In function ‘void Dijkstra(int)’: user.cpp:22:25: warning: variable ‘cost’ set but not used [-Wunused-but-set-variable] int i,j,column,node,cost,line,direction,newLine,newColumn,newNode,newDirection; ^ user.cpp: In function ‘int main()’: user.cpp:71:36: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("biomech.in","r",stdin); ^ user.cpp:72:38: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("biomech.out","w",stdout); ^ user.cpp:75:25: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%lld",&limit); ^ user.cpp:78:42: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&changeCost[i][j]); ^ user.cpp:81:40: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&moveCost[i][j]); ^