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<stdlib.h>
typedef long long ll;
int main(void){
    char S[1][3];
    scanf("%s",S[0]);
    int ans = 0;
    if(S[0][0]=='S'&&S[0][1]=='U'&&S[0][2]=='N') ans = 7;
    else if(S[0][0]=='M'&&S[0][1]=='O'&&S[0][2]=='N') ans = 6;
    else if(S[0][0]=='T'&&S[0][1]=='U'&&S[0][2]=='E') ans = 5;
    else if(S[0][0]=='W'&&S[0][1]=='E'&&S[0][2]=='D') ans = 4;
    else if(S[0][0]=='T'&&S[0][1]=='H'&&S[0][2]=='U') ans = 3;
    else if(S[0][0]=='F'&&S[0][1]=='R'&&S[0][2]=='I') ans = 2;
    else if(S[0][0]=='S'&&S[0][1]=='A'&&S[0][2]=='T') ans = 1;
    printf("%d\n",ans);
    return 0;
}