// C++ implementation of the approach
#include <bits/stdc++.h>
using namespace std;
// Function to return the number of regions in a Planar Graph
int Regions(int Vertices, int Edges)
{
int R = Edges + 2 - Vertices;
return R;
}
// Driver code
int main()
{
int V = 5, E = 7;
cout << Regions(V, E);
return 0;
}
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