View Compilation Error

0_0_33796381_14216.cpp: In function 'bool lose(int, int, int)':
0_0_33796381_14216.cpp:23:2: error: 'ld' was not declared in this scope
  ld tmp=sqrt(k*k+2*k+5);
  ^
0_0_33796381_14216.cpp:24:5: error: expected ';' before 'x'
  ld x=(1-k+tmp)/2.0,y=(3+k+tmp)/2.0;
     ^
0_0_33796381_14216.cpp:25:5: error: 'x' was not declared in this scope
  if(x*n==a&&y*n==b)
     ^
0_0_33796381_14216.cpp:25:13: error: 'y' was not declared in this scope
  if(x*n==a&&y*n==b)
             ^