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

/*判断某年是否为闰年*/
bool Runyear(int i) { //2004,2000是闰年，1900不是闰年
	if((i%4==0&&i%100!=0)||i%400==0)
		return true;
	else
		return false;
}
/*统计两个年份之间的总天数*/
int count(int m,int n) {
	int sumday=0;
	for(; m<=n; m++) {
		if(Runyear(m))
			sumday+=366;
		else
			sumday+=365;
	}
	return sumday;
}
int main() {
	int s=count(1901,2000);
	cout<<"总天数为："<<s<<endl;
	cout<<"除7循环数"<<s/7<<endl;
	cout<<"除7余数为："<<s%7<<endl;
}