每日一题洛谷P8780 [蓝桥杯 2022 省 B] 刷题统计c++

#include<iostream>
using namespace std;
#define int long long
signed main() {
	int a, b, n;
	cin >> a >> b >> n;
	int week = n / (a * 5 + b * 2);
	int i = 1;
	n -= week * (a * 5 + b * 2);
	int sum = 0;
	while (1) {
		if (i % 7 == 0 || i % 7 == 6)sum += b;
		else sum += a;
		if (sum >= n)break;
		i++;
	}
	cout << (week * 7 + i) << endl;
	return 0;
}