来个题解看一看，看一看，看一看；题解拿走

来个题解看一看，看一看，看一看；题解拿来用一用，ctrl c，ctrl v。
题解到，真好用，复制下，全部AC，开心喜乐生活愉快点个赞！

#include <iostream>
#include <iomanip>

using namespace std;

int main() {
    int n, k;
    cin >> n >> k;
    int countA = n / k;
    int sumA = (k + k * countA) * countA / 2;
    int sumTotal = n * (n + 1) / 2;
    int sumB = sumTotal - sumA;
    int countB = n - countA;
    cout << fixed << setprecision(1) << (double)sumA / countA << " " << fixed << setprecision(1) << (double)sumB / countB << endl;
    return 0;
}

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