/in/foo.cc: In function 'int main()':
/in/foo.cc:11:9: error: 'i' was not declared in this scope
     For(i,1,n)  For(j,1,n)  Mi[i][j]=1e9,Ma[i][j]=-1e9;
         ^
/in/foo.cc:11:14: error: 'For' was not declared in this scope
     For(i,1,n)  For(j,1,n)  Mi[i][j]=1e9,Ma[i][j]=-1e9;
              ^
/in/foo.cc:15:14: error: 'Dow' was not declared in this scope
     Dow(i,1,n)
              ^