From e95d22d3927549caa5c259a59aedaa67d3b636ca Mon Sep 17 00:00:00 2001
From: Thomas Schmucker <ts@its1.de>
Date: Tue, 2 Jan 2024 19:09:19 +0100
Subject: fix bug

---
 src/day25.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'src')

diff --git a/src/day25.cpp b/src/day25.cpp
index aaad9e9..1d5e19e 100644
--- a/src/day25.cpp
+++ b/src/day25.cpp
@@ -79,7 +79,7 @@ random_node(const graph_type& graph)
 	static random_device dev;
 	static mt19937       generator(dev());
 
-	uniform_int_distribution<graph_type::size_type> distribute(0, graph.size());
+	uniform_int_distribution<graph_type::size_type> distribute(0, graph.size()-1);
 
 	auto iter = graph.begin();
 	advance(iter, distribute(generator));
-- 
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