Compilare: user.cpp: In function ‘void dijkstra(int)’: user.cpp:22:14: warning: overflow in implicit constant conversion [-Woverflow] best[i]=INF; ^ user.cpp: In function ‘void solve()’: user.cpp:47:26: warning: suggest parentheses around ‘+’ inside ‘<<’ [-Wparentheses] for (int i=1;i<=(1<<k+1)-1;i++) ^ user.cpp:49:19: warning: overflow in implicit constant conversion [-Woverflow] mi[j][i]=INF; ^ user.cpp:50:26: warning: suggest parentheses around ‘+’ inside ‘<<’ [-Wparentheses] for (int i=1;i<=(1<<k+1)-1;i++) ^ user.cpp:56:28: warning: suggest parentheses around ‘+’ inside ‘<<’ [-Wparentheses] printf("%d",mi[k][(1<<k+1)-1]); ^ user.cpp: In function ‘int main()’: user.cpp:60:37: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ubuntzei.in","r",stdin); ^ user.cpp:61:39: warning: ignoring return value of ‘FILE* freopen(const char*, const char*, FILE*)’, declared with attribute warn_unused_result [-Wunused-result] freopen("ubuntzei.out","w",stdout); ^ user.cpp:63:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d",&n,&m,&k); ^ user.cpp:65:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d ",&nod[i]); ^ user.cpp:71:37: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d",&x,&y,&d); ^