华为机试 HJ105题解 | #记负均正II#

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

int main() {
    vector<int> nums;
    int n;
    while (scanf("%d", &n) != EOF) {
        nums.push_back(n);
    }

    double average = 0.0;
    double totalSum = 0.0;
    int degCnt = 0; // 正数和0的个数
    int negCnt = 0; // 负数个数
    for (auto num : nums) {
        if (num < 0) {
            negCnt++;
        } else {
            degCnt++;
            totalSum += num;
        }
    }
    average = totalSum / degCnt;
    std::cout << negCnt << std::endl;
    if (degCnt == 0) {
        std::cout << "0.0" << std::endl;
    } else {
        std::cout << setprecision(1) << fixed << average << std::endl;
    }

    return 0;
}
// 64 位输出请用 printf("%lld")