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)

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

int main(){
    int a=0,cmp;
    char S[99];

    gets(S);

    cmp=strcmp("SUN",S);
    if(cmp==0){
        a=7;
    }

    cmp=strcmp("MON",S);
    if(cmp==0){
        a=6;
    }

    cmp=strcmp("TUE",S);
    if(cmp==0){
        a=5;
    }

    cmp=strcmp("WED",S);
    if(cmp==0){
        a=4;
    }

    cmp=strcmp("THU",S);
    if(cmp==0){
        a=3;
    }

    cmp=strcmp("FRI",S);
    if(cmp==0){
        a=2;
    }

    cmp=strcmp("SAT",S);
    if(cmp==0){
        a=1;
    }

    printf("%d \n",a);

    return 0;
}