CSP小苹果详细解法

#include <bits/stdc++.h>
using namespace std;
int main(){
    int n,ant = 0,t,j;
    cin>>n;
    cout<<"小苞的桌上一共放了"<<n<<"个苹果。"<<endl;
    int a[n+5],b[n+5];
    for(int i = 1;i<=n;i++){
        a[i] = i;
    }
    while(n){
        t = 0;
        ant++;
        cout<<"小苞第"<<ant<<"天拿走了编号为";
        for(int i = 1;i<=n;i+=3){
            cout<<a[i];
            if(i+3<=n){
                cout<<"、";
            }
            a[i] = 0;
            t++;
        }
        cout<<"的苹果。"<<endl;
        j = 1;
        for(int i = 1;i<=n;i++){
            if(a[i]!=0){
                b[j] = a[i];
                j++;
            }
        }
        for(int i = 1;i<=n;i++){
            a[i] = 0;
        }
        for(int i = 1;i<=n-t;i++){
            a[i] = b[i];
        }
        n -= t;
    }
    return 0;
}