From 0527dbd60dfadf8997086a54ecfb87c51939cca6 Mon Sep 17 00:00:00 2001
From: Antti H S Laaksonen <ahslaaks@cs.helsinki.fi>
Date: Wed, 19 Apr 2017 21:03:04 +0300
Subject: [PATCH] Fix grammar

---
 chapter15.tex | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/chapter15.tex b/chapter15.tex
index afcb0f6..69ce6d1 100644
--- a/chapter15.tex
+++ b/chapter15.tex
@@ -543,7 +543,7 @@ bool same(int a, int b) {
 \begin{samepage}
 The function \texttt{unite} joins the sets
 that contain elements $a$ and $b$
-(the elements has to be in different sets).
+(the elements have to be in different sets).
 The function first finds the representatives
 of the sets and then connects the smaller
 set to the larger set.