1. 程式人生 > >乙級真題-1002-數字分類 (20)

乙級真題-1002-數字分類 (20)

#include <iostream>
#include <bits/stdc++.h>
using namespace std;

int main()
{
    int ans1,ans2,ans3,ans5,cnt;
    ans1=ans2=ans3=ans5=cnt=0;
    double ans4=0;
    int N,num;
    int flag = 1;
    cin >> N;
    for(int i = 0; i < N; i++){
        cin >> num;
        switch(num%5){
            case 0: if(num%2==0) ans1 += num; break;
            case 1: ans2 += flag*num; flag*=-1;break;
            case 2: ans3++;break;
            case 3: ans4 += num;cnt++;break;
            case 4: if(num > ans5) ans5 = num;break;
        }
    }
    if(ans1==0) cout << "N ";
    else cout << ans1 << " ";
    if(ans2==0) cout << "N ";
    else cout << ans2 << " ";
    if(ans3==0) cout << "N ";
    else cout << ans3 << " ";
    ans4 /= cnt;
    if(cnt==0) cout << "N ";
    else printf("%.1lf ",ans4);
    if(ans5==0) cout << "N";
    else cout << ans5;

    return 0;
}