1. #include <stdio.h>
  2. #include <stdlib.h>
  3. #include <string.h>
  4.  
  5. int main()
  6. {
  7.   int day, month, yearfn, yearln, a;
  8.   scanf("%d", &day);
  9.   scanf("%d", &month);
  10.   scanf("%d", &yearfn);
  11.   scanf("%d", &yearln);
  12.  
  13.   /*a=day+(2.6*month-0.2)+yearln+(yearln/4)+(yearfn/4)-2*yearfn;*/
  14.   a = day + (2.6*month-0.2) + yearln + (yearln/4) + (yearfn/4) - 2 * yearfn;
  15.   printf("W= %d", a % 7);
  16.  
  17.  
  18.  
  19.   system("PAUSE");	
  20.   return 0;
  21. }