C :

#include<stdio.h>
int main()
{
  int year,m=0,n,t,c,d,a=0,b=5,x,i,k;
  scanf("%d",&year);
  n=2010-year;
  for(i=1;i<=n;i++)
  {
   if((year+i)%4==0&&(year+i)%100!=0||(year+i)%400==0)
    m+=366;
   else
   {
    m+=365;
    c=i;
   }

  }
  for(i=12*n-1;i>0;i--)
  {
    t=i%12;
    d=i/12+1;
    switch(t)
    {
      case 4:case 6:case 9:case 11:
       b+=30%7;
       b=b%7;
       if(b==5)
         a++;
       m-=31;
       break;
      case 2:
       if(d==c)
       {
        b+=30%7;
        b=b%7;
        m-=28;
       }
        else
        {
        m-=29;
        b+=30%7;
        b=b%7;
        }
       break;
      default:
       b+=31%7;
       b=b%7;
       if(b==5)
         a++;
       m-=30;
      break;

    }
  }
  printf("%d",a);
}

C++ :

#include <iostream>
using namespace std;
int main()
{
	int n;
	cin>>n;
	int w,y,c,m,d,ans=0,flag=0;
	for (int i=n+1;i<=2010;i++){
		y=(i-1)%100;
		c=((i-1)/100)%10+(i-1)/1000*10;
		for (int j=1;j<=12;j++){
			if (j==1){
				m=13;
				y--;
				flag=1;
			} 
			if (j==2)
				continue;
			else if(j>=3){
				m=j;
				if (flag){
					y++;
					flag--; 
				} 
			}	
			w=(y+y/4+c/4-(2*c)+((26*(m+1))/10)+30-1)%7;
			if (w==5)
				ans++;
		}
	}
	cout<<ans<<endl;
	return 0;
}