Compilare: user.cpp: In function ‘int main()’: user.cpp:22:89: warning: suggest parentheses around ‘-’ inside ‘<<’ [-Wparentheses] M[k][i][j]=max(M[k-1][i+(1<<(k-1))][j+(1<<(k-1))],max(M[k-1][i][j+((1<<k-1))],max(M[k-1][i][j],M[k-1][i+(1<<(k-1))][j]))); ^ user.cpp:12:10: warning: unused variable ‘fin’ [-Wunused-variable] FILE*fin=freopen("plantatie.in","r",stdin); ^ user.cpp:13:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d",&n,&m); ^ user.cpp:16:36: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&M[0][i][j]); ^ user.cpp:26:37: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d%d%d",&cx,&cy,&lat); ^