70分求助

#include<bits/stdc++.h>
using namespace std;
int num=0;
int year1,year2,month1,month2,day1,day2,date1,date2;
int d[12]={31,28,31,30,31,30,31,31,30,31,30,31};
void judge(int year,int month,int day){
    if((year%400==0||(year%4==0&&year%100!=0))&&month==1){
        if(day>29) return;
    }
    else if(day>d[month-1]){
        return;
    }
    else if(year==year1&&month<=month1&&day<day1) return;
    else if(year==year2&&month>=month2&&day>day2) return;
    else{
        if(year/1000==day%10){
            if((year/100)%10==day/10){
                if(year%10==month/10){
                    if((year%100)/10==month%10){
                        num++;
                        printf("%4d%02d%02d\n",year,month,day);
                    }
                }
            } 
        }
    }

}
int main()
{
    cin>>date1>>date2;
    year1=date1/10000,month1=(date1-year1*10000)/100,day1=date1%100;
    year2=date2/10000,month2=(date2-year2*10000)/100,day2=date2%100; 
    for(int i=year1;i<=year2;i++)
    {
        for(int j=1;j<=12;j++)
        {
            for(int k=1;k<=31;k++)
                judge(i,j,k);
        }
    }
    cout<<num;
    return 0;
} 

Wa # 6,9,10,11