3 files changed, 88 insertions, 0 deletions
diff --git a/referee/.gitignore b/referee/.gitignore
new file mode 100644
index 0000000..1c8d92c
--- /dev/null
+++ b/referee/.gitignore
@@ -0,0 +1 @@
+referee
diff --git a/referee/Makefile b/referee/Makefile
new file mode 100644
index 0000000..67317b2
--- /dev/null
+++ b/referee/Makefile
@@ -0,0 +1,13 @@
+CXX = g++
+CXXFLAGS = -Wall -Wextra -std=c++17 -g -O2
+
+.PHONY: all clean
+
+all: referee
+
+clean:
+	rm -f referee
+
+
+referee: referee.cpp ../board.h ../board.o
+	$(CXX) $(CXXFLAGS) -o $@ $< ../board.o
diff --git a/referee/referee.cpp b/referee/referee.cpp
new file mode 100644
index 0000000..78c4193
--- /dev/null
+++ b/referee/referee.cpp
@@ -0,0 +1,74 @@
+#include <iostream>
+#include <sstream>
+#include <string>
+#include <cassert>
+#include "../board.h"
+
+
+struct MoveLine {
+	int pindex;
+	string line;
+};
+
+MoveLine readMoveLine() {
+	while (true) {
+		if (!isspace(cin.peek())) break;
+		cin.get();
+	}
+
+	MoveLine ml;
+	cin >> ml.pindex;
+	if (!cin) exit(0);
+
+	assert(cin.get() == ' ');
+	getline(cin, ml.line);
+
+	return ml;
+}
+
+int8_t playerToClr(int player) {
+	return 2 * player - 1;
+}
+
+int main() {
+	Board bd = Board::makeInitial();
+
+	int nplayers;
+	cin >> nplayers;
+	assert(nplayers == 2);
+	cin.ignore(1000, '\n');
+
+	string p1, p2;
+	getline(cin, p1);
+	getline(cin, p2);
+
+	int onturn = 0;
+
+	while (true) {
+		MoveLine ml = readMoveLine();
+		if (ml.pindex != onturn) {
+			cout << "invalid" << endl;
+			continue;
+		}
+
+		optional<Move> mv = Move::parse(ml.line);
+
+		if (mv && !bd.isValid(*mv, playerToClr(onturn))) {
+			cout << "invalid" << endl;
+			continue;
+		}
+
+		int win = bd.applyCW(*mv);
+
+		if (win != 0) {
+			cout << "valid end" << endl;
+			if (win == -1) cout << "3 1" << endl;
+			else if (win == 1) cout << "1 3" << endl;
+			break;
+		} else {
+			cout << "valid" << endl;
+		}
+
+		onturn = !onturn;
+	}
+}