P15518 [CCC 2016 J1] Tournament Selection

Each player in a tournament plays six games. There are no ties. The tournament director places the players in groups based on the results of games as follows: - if a player wins $5$ or $6$ games, they are placed in Group $1$; - if a player wins $3$ or $4$ games, they are placed in Group $2$; - if a player wins $1$ or $2$ games, they are placed in Group $3$; - if a player does not win any games, they are eliminated from the tournament. Write a program to determine which group a player is placed in.

The input consists of six lines, each with one of two possible letters: `W` (to indicate a win) or `L` (to indicate a loss).

The output will be either $1, 2, 3$ (to indicate which Group the player should be placed in) or $-1$ (to indicate the player has been eliminated).