Naruto_steven @ 2018-11-04 22:25:22

//20000101
//cdefghkq
//20101231

/*20000101
20101231*/
#include<iostream>
using namespace std;
#define ll long long
int r[14]={0,31,28,31,30,31,30,31,31,30,31,30,31};
int y[14]={0,31,29,31,30,31,30,31,31,30,31,30,31};
int main(){
    ll a,b,ans;
    cin>>a>>b;
    for(ll i=a;i<=b;i++){
        int c=i/10000000;
        int d=(i%10000000)/1000000;
        int e=(i%1000000)/100000;
        int f=(i%100000)/10000;
        int g=(i%10000)/1000;
        int h=(i%1000)/100;
        int k=(i%100)/10;
        int q=i%10;
        if(((c*1000+d*100+e*10+f)%4==0&&(c*1000+d*100+e*10+f)%100!=0)||((c*1000+d*100+e*10+f)%400==0)){
            if((g*10+h)>12||(k*10+q>y[g*10+h])){
                continue;
            }else{
                if(c==q&&d==k&&e==h&&f==g) ans++;;
            }   
        }else{
            if((g*10+h)>12||(k*10+q>r[g*10+h])){
                continue;
            }else{
                if(c==q&&d==k&&e==h&&f==g) ans++;
            }
        }
    }
    cout<<ans-1;    
    return 0;
} 
//c==q&&d==k&&e==h&&f==g

by tido @ 2018-11-08 21:34:18

include<bits/stdc++.h>

using namespace std; string s1,s2; int hmday[13]={0,31,28,31,30,31,30,31,31,30,31,30,31}; int main() { freopen("date.in","r",stdin); freopen("date.out","w",stdout); cin>>s1>>s2; if(s1==s2) { int t=1; for(int i=0,j=s1.length()-1;i<s1.length();i++,j--) if(s1[i]!=s2[j]) { t=0; break; } if(t==1)
{ cout<<1; return 0; } else { cout<<0; return 0; } }

int startyear,endyear;
startyear=(s1[0]-'0')*1000+(s1[1]-'0')*100+(s1[2]-'0')*10+s1[3]-'0';    
endyear=(s2[0]-'0')*1000+(s2[1]-'0')*100+(s2[2]-'0')*10+s2[3]-'0';

int smonth,emonth,sday,eday;
smonth=(s1[4]-'0')*10+s1[5]-'0';
sday=(s1[6]-'0')*10+s1[7]-'0';
emonth=(s2[4]-'0')*10+s2[5]-'0';
eday=(s2[6]-'0')*10+s2[7]-'0';

int startmonth,endmonth,startday,endday;
startmonth=(s1[3]-'0')*10+s1[2]-'0';
startday=(s1[1]-'0')*10+s1[0]-'0';
endmonth=(s2[3]-'0')*10+s2[2]-'0';
endday=(s2[1]-'0')*10+s2[0]-'0';

if(startmonth<smonth||startmonth>=smonth&&startday<sday)
    startyear++;
if(endmonth>emonth||endmonth<=emonth&&endday>eday)
    endyear--;

int ans=0;
for(int i=startyear;i<=endyear;i++)
{
    int month=0,day=0,ii=i;
    month+=ii%10*10;ii/=10;
    month+=ii%10;ii/=10;
    day+=ii%10*10;ii/=10;
    day+=ii%10;ii/=10;
    if(month>=1&&month<=12)
    {
        if(month!=2&&day>=1&&day<=hmday[month])
                ans++;
        if(month==2)
        {
            if(i%4==0&&i%100!=0&&day>=1&&day<=29)
                ans++;

            else if(i%400==0&&day>=1&&day<=29)  
                ans++;

            else if(day>=1&&day<=28)
                ans++;

        }
    }
}
cout<<ans;
fclose(stdin);
fclose(stdout);

}