#include <iostream>
#include <string>
#include "edge.h"
using std::string;
using std::ostream;

edge::edge(const int v1, const int v2) : from(v1), to(v2), weight(1.0) {}
edge::edge(const int v1, const int v2, const double w) : from(v1), to(v2), weight(w) {}
edge::edge(const edge& e) : from(e.from), to(e.to), weight(e.weight) {}
edge& edge::operator=(const edge& e) {
    from = e.from;
    to = e.to;
    weight = e.weight;
    return *this;
}

bool edge::operator==(const edge& e) const {
    return from==e.from && to==e.to && weight==e.weight;
}

bool edge::operator!=(const edge& e) const {
    return from!=e.from || to!=e.to || weight!=e.weight;
}