View Compilation Error

0_0_13161562_28712.cpp: In function 'void solve()':
0_0_13161562_28712.cpp:74:35: error: lvalue required as left operand of assignment
  for(int i=0;i<L;i++) {w[i].real()=cos(2.0*pi*i/L);w[i].imag()=sin(2.0*pi*i/L);}
                                   ^
0_0_13161562_28712.cpp:74:63: error: lvalue required as left operand of assignment
  for(int i=0;i<L;i++) {w[i].real()=cos(2.0*pi*i/L);w[i].imag()=sin(2.0*pi*i/L);}
                                                               ^
0_0_13161562_28712.cpp:77:35: error: lvalue required as left operand of assignment
  for(int i=0;i<L;i++) {w[i].real()=cos(-2.0*pi*i/L);w[i].imag()=sin(-2.0*pi*i/L);}
                                   ^
0_0_13161562_28712.cpp:77:64: error: lvalue required as left operand of assignment
  for(int i=0;i<L;i++) {w[i].real()=cos(-2.0*pi*i/L);w[i].imag()=sin(-2.0*pi*i/L);}
                                                                ^