周二（PTA简单题练习）例

#include<iostream>
#include<math.h>
using·namespace·std;
int·main()
{
····int·N;int·num1=0,num2=0,num3=0;
····cin>>N;
····if(N<=1000)
····{int·pork=15,chicken=20;double·beef=0.1/9;
····if(N>=pork)
········num1=floor(N/15);
····else·num1=0;
····if(N>=chicken)
········num2=floor(N/20);
····else·num2=0;
····if(N>=beef)
········num3=floor(N/beef);
········else·num3=0;
·cout<<num1<<"·"<<num2<<"·"<<num3;
····}
····return·0;
}