A company named RT&T has a network of n switching stations connected by m high-speed communications links. Each customer’s phone is directly connected to one station in his or her area. The engineers of RT&T have developed a prototype video-phone system that allows two customers to see each other during a phone call. However, to produce acceptable image quality, the number of links used to transmit video signals between the two parties cannot exceed four. Suppose that the RT&T network is represented by a graph. Describe an efficient algorithm that computes, for each station, the set of stations it can reach using no more than four links.
.button {
background-color: #4CAF50;
border: none;
color: white;
padding: 10px 20px;
text-align: center;
text-decoration: none;
display: inline-block;
font-size: 16px;
margin: 4px 2px;
cursor: pointer;
border-radius: 10px;
}
.awasam-alert {
color: red;
}
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