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: Wrong Answer)

#include <stdio.h>
 
int main(void) {
	// your code goes here
	char s;
	scanf("%c",&s);
	if(s = "SUN"){
	printf("7")	;
    }
	else if(s = "MON"){
	printf("6");
    }
	else if(s = "TUE"){
	printf("5");
    }
	else if(s = "WED"){
	printf("4");
    }
	else if(s = "THU"){
	printf("3");
    }
	else if(s = "FRI"){
	printf("2");
    }
	else{
	printf("1");
    }
 
	return 0;
}