# Arup Guha
# 2/8/2020
# Solution to COP 2930 Individual Program #2B: Tennis Scorer

def main():

    # Print initial message.
    print("Please enter the game winners, in sequence.")

    # Set counts.
    rogerSets = 0
    serenaSets = 0

    # 2 sets wins...
    while rogerSets < 2 and serenaSets < 2:

        # Start a set with 0 games each.
        rogerGames = 0
        serenaGames = 0

        # Easier to handle loop control elsewhere.
        while True:

            # Get who won the next game.
            winner = input("")

            # Adjust the appropriate game counter.
            if winner == "SERENA":
                serenaGames += 1
            else:
                rogerGames += 1

            # One way Serena can win.
            if serenaGames == 6 and rogerGames <= 4:
                serenaSets += 1
                break

            # Other way Serena can win.
            if serenaGames == 7:
                serenaSets += 1
                break

            # Now, copy for Roger.
            if rogerGames == 6 and serenaGames <= 4:
                rogerSets += 1
                break

            # Other way Serena can win.
            if rogerGames == 7:
                rogerSets += 1
                break

    # When we get here, the match is over!

    # Serena wins case.
    if serenaSets > rogerSets:
        print("SERENA won the match",serenaSets,"sets to",rogerSets,"sets.")

    # Roger wins case.
    else:
        print("ROGER won the match",rogerSets,"sets to",serenaSets,"sets.")
        
# Start it.
main()