// ----------------------------------------------------------

#include<stdio.h>

int md(int m,int d)
{
  switch (m)
    {
    case 12:
      d = d + 30;
    case 11:
      d = d + 31;
    case 10:
      d = d + 30;
    case 9:
      d = d + 31;
    case 8:
      d = d + 31;
    case 7:
      d = d + 30;
    case 6:
      d = d + 31;
    case 5:
      d = d + 30;
    case 4:
      d = d + 31;
    case 3:
      d = d + 28;
    case 2:
      d = d + 31;
    case 1:
      d = d;
    }
  return d;
}

main()
{
  int m0,d0,m1,d1;

  scanf("%d %d %d %d",&m0,&d0,&m1,&d1);
  printf("%d\n",md(m1,d1)-md(m0,d0));
}

// ----------------------------------------------------------

#include <stdio.h>

int fact(int n)
{

	if(n==0)
		return 1;
	else
		return n * fact(n-1);
	
}

main()
{
	int n;
	scanf("%d",&n);
	printf("%d ! = %d\n",n,fact(n));
}

// ----------------------------------------------------------

#include <stdio.h>

d2x(int num,int x)
{
  
  if(num<x){
    printf("%d",num);
    return;
  }

  d2x(num/x,x);

  printf("%d",num%x);
}

main()
{
  int num,x;
  scanf("%d %d",&num,&x);

  d2x(num,x);

  printf("\n");

}

// ----------------------------------------------------------

#include <stdio.h>

int mypow(int a, int b)
{
  if(b==0)
    return 1;
  else
    return a * mypow(a,b-1);
}

main()
{
  int a,b;

  scanf("%d %d",&a,&b);
  printf("%d ^ %d = %d\n",a,b,mypow(a,b));
}