题解 | #日历中的数字#

#include <bits/stdc++.h> #include using namespace std; int nian(int year) { if(year%4==0&&year%100!=0||year%400==0) return 29; else return 28; } int d(int n,int x,int day) { int i; for(i=0;i<2;i++) { if(x%10==day) n++; x/=10; } return n; } int y(int n,int year,int day) { int i; for(i=0;i<4;i++) { if(year%10==day) n++; year/=10; } return n; } int mon(int n,int month,int day) { int i; for(i=0;i<2;i++) { if(month%10==day) n++; month/=10; }
return n; } int main() { int m[13]={0,31,28,31,30,31,30,31,31,30,31,30,31},i,n=0,count; int year,month,day;

while(cin>>year>>month>>day)
{
    if(month==2)
    m[2]=nian(year);
for(i=1;i<=m[month];i++)
{
    n=d(n,i,day);
    n=y(n,year,day);
    n=mon(n,month,day);
}
    cout<<n<<endl;
    n=0;
}
return 0;

}