760A 水

LINK

第一天单独一行

其余7天一行

问某月有多少行

......

/** @Date    : 2017-04-02-21.35
  * @Author  : Lweleth (SoungEarlf@gmail.com)
  * @Link    : https://github.com/
  * @Version :
  */
#include<bits/stdc++.h>
#define LL long long
#define PII pair
#define MP(x, y) make_pair((x),(y))
#define fi first
#define se second
#define PB(x) push_back((x))
#define MMG(x) memset((x), -1,sizeof(x))
#define MMF(x) memset((x),0,sizeof(x))
#define MMI(x) memset((x), INF, sizeof(x))
using namespace std;

const int INF = 0x3f3f3f3f;
const int N = 1e5+20;
const double eps = 1e-8;

int a[13] = {0, 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31};

int main()
{
    int m, d;
    cin >> m >> d;
    int cnt = 1;
    int ans = 0;
    while(cnt < a[m])
    {
        cnt++;
        d++;
        if(d % 7 == 1)
        {
            ans++;
        }
    }
    printf("%d\n", ans + 1);
    return 0;
}