#include<iostream>
using namespace std;

int main()
{
    //前面59个数只能构造出来一个2023，故年份不用再判断
   int a[41]={3,8,5,1,6,3,4,6,7,0,7,8,2,7,6,8,9,5,6,5,6,1,4,0,1,0,0,9,4,8,0,9,1,2,8,5,0,2,5,3,3};
   int months[13]={0,31,28,31,30,31,30,31,31,30,31,30,31}; // 定义每个月份的天数
   int ans = 0;
   for(int  i= 1;i <= 12; i++){
    for(int j = 1;j <= months[i]; j++){
        int four[4];//存储数位
        if(i < 10){
            four[0] = 0;
            four[1] = i;
        }
        else{
            four[0] = 1;
            four[1] = i % 10;
        }
        if(j < 10){
            four[2] = 0;
            four[3] = j;
        }
        else {
            four[2] = j / 10;
            four[3] = j % 10;
        }
        int t = 0;  //已经匹配数字成功的个数
        for(int k = 0; k < 41; k++){
        if(a[k] == four[t])
            t++;
        if(t == 4){
                ans ++;
                break;
            }
        }
    }
   }
   cout << ans;
   return 0;
}