Problem:
Score : 100 points

Problem Statement

Given is a string S representing the day of the week today.

S is SUN, MON, TUE, WED, THU, FRI, or SAT, for Sunday, Monday, Tuesday, Wednesday, Thursday, Friday, and Saturday, respectively.

After how many days is the next Sunday (tomorrow or later)?

Constraints

S is SUN, MON, TUE, WED, THU, FRI, or SAT.

Input

Input is given from Standard Input in the following format:

S

Output

Print the number of days before the next Sunday.

Sample Input 1

SAT

Sample Output 1

1

It is Saturday today, and tomorrow will be Sunday.

Sample Input 2

SUN

Sample Output 2

7

It is Sunday today, and seven days later, it will be Sunday again.

Solution in C (GCC 5.4.1) (judge verdict: Runtime Error)

#include<stdio.h>
int main()
{
char a[3];
  for(int i=0;i<3;++i)
  {
  printf('%c',&a[i]);
  }
if(a[0]=='S' && a[1]=='U') printf("7");
else  if(a[0]=='S' && a[1]=='A') printf("1");
else  if(a[0]=='F' && a[1]=='R') printf("2");  
else  if(a[0]=='T' && a[1]=='H') printf("3");
else  if(a[0]=='W' && a[1]=='E') printf("4");  
else  if(a[0]=='T' && a[1]=='U') printf("5");  
else  if(a[0]=='M' && a[1]=='O') printf("1");  

return 0;
}