标题：[交易系统]月间日策略

input:n(23,1,31,1);

if holding=0 then begin
 if day=n then
  buy(1,1,limitr,open);
end

if holding>0 then begin
 if day=n then
  sell(1,holding,limitr,close);
end
    
收益:asset,noaxis,colorred;
次数:totaltrade,linethick0;
胜率:percentwin,linethick0;
连亏:maxseqloss,linethick0;
连赢:maxseqwin,linethick0;