2020第十一届蓝桥杯c++省赛B组-跑步锻炼

题解：

#include <iostream>
#include <stdio.h>
#include <cstdlib>
#include <cmath>
#include <cctype>
#include <string>
#include <cstring>
#include <algorithm>
#include <stack>
#include <queue>
#include <set>
#include <map>
#include <ctime>
#include <vector>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
#define ms(s) memset(s, 0, sizeof(s))
const int inf = 0x3f3f3f3f;




int main() 
{
    
    
	int y = 2000, m = 1,d = 1;
	int w = 6;//sataday
	int res = 0;
	while(y != 2020 || m != 10 || d != 2)
	{
    
    
		if(w == 1 || d == 1) res += 2;
		else res++;
		d++;
		w = (w+1) % 7;
		int t;
		if(m == 4 || m == 6 || m == 9 || m == 11) t = 30;//1 3 5 7 8 10 12
		else if(m != 2) t = 31;//4 6 9 11
		else if(y % 4 == 0 && y % 100 || y % 400 == 0) t = 29; //判断2月的 闰年29 平年28
		else t = 28;

		//更新月份日期
		if(d > t) d = 1,m++;
		if(m > 12) m = 1,y++;
	}
	cout << res;
    return 0;
}