题解 | #求解立方根#

line = input('');
range = -20:0.1:20;
err1 = 1;
num = 0;

for jj = 1 : length(range)
    err = abs(line - range(jj)*range(jj)*range(jj));
    if err < err1
       err1 = err;
       num = jj;
    end
end
printf("%d\n",range(num));