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use bufio;
use fmt;
use io;
use os;
fn scanbyte(file: io::handle) u8 = {
match (bufio::scanbyte(os::stdin)!) {
case let byte: u8 =>
return byte;
case io::EOF =>
fmt::fatal("Unexpected EOF");
};
};
export fn main() void = {
let score: u16 = 0;
for (true) {
const them = 'D' - (match (bufio::scanbyte(os::stdin)!) {
case let byte: u8 =>
yield byte;
case io::EOF =>
break;
});
scanbyte(os::stdin);
const us = scanbyte(os::stdin) - 'W';
scanbyte(os::stdin);
score += us + (us + them) % 3 * 3;
};
fmt::println(score)!;
};
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