public class tz{
public static void main(String[] args){
int sg=165,tz=52;bz = sg-115
if (tz-bz>3)
{
System.out.println("体重偏胖，请多运动！");
}
else if(tz-bz<-3)
{
System.out.println("体重偏瘦，请注意营养！");
}
else
{
System.out.println("体重正常，请多保持！");
}
}
}