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: Accepted)

/*
 * main.c
 *
 *  Created on: 2019/07/21
 *      Author: family
 */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>

int main()
{
	char S[4] = {0};
	int ans = 0;
	scanf("%s", S);
	switch(S[0]) {
	case 'S':
		if (S[1] == 'U') {
			ans = 7;
		} else {
			ans = 1;
		}
		break;
	case 'M':
		ans = 6;
		break;
	case 'T':
		if (S[1] == 'U') {
			ans = 5;
		} else {
			ans = 3;
		}
		break;
	case 'W':
		ans = 4;
		break;
	case 'F':
		ans = 2;
		break;
	}
	printf("%d\n",ans);
    return 0;
}