\documentclass{ltjsarticle}
\usepackage{graphicx}
\usepackage{tikz}
\usepackage{amsmath}
\usetikzlibrary{positioning,graphs,graphdrawing}
\usegdlibrary{force}
\begin{document}
\begin{tikzpicture}[scale = 1,>=stealth, every node/.style={circle, draw, minimum size=0.75cm}]
(続く)