Compilare: user.cpp: In function ‘void solve()’: user.cpp:46:26: warning: suggest parentheses around ‘+’ inside ‘<<’ [-Wparentheses] for (int i=1;i<=(1<<k+1)-1;i++) ^ user.cpp:49:26: warning: suggest parentheses around ‘+’ inside ‘<<’ [-Wparentheses] for (int i=1;i<=(1<<k+1)-1;i++) ^ user.cpp:55:28: warning: suggest parentheses around ‘+’ inside ‘<<’ [-Wparentheses] printf("%d",mi[k][(1<<k+1)-1]); ^ user.cpp: In function ‘int main()’: user.cpp:59:37: 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:60:39: 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:62:31: 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:64:27: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d ",&nod[i]); ^ user.cpp:69:37: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d %d %d",&x,&y,&d); ^