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Euler's Formula

Author: Benjamin Qi

A formula for finding the number of faces in a planar graph.

Introduction

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Example 1

StatusSourceProblem NameDifficultyTagsSolution
DMOJVery Hard

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Example 2

StatusSourceProblem NameDifficultyTagsSolution
PlatVery HardExternal Sol

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1int N, h[750][750];
2ll ans;
3vector<pair<int,pi>> v;
4
5int hsh(int a, int b) {
6 return N*a+b;
7}
8
9const int xd[4] = {1,0,-1,0}, yd[4] = {0,1,0,-1};
10

Problems

StatusSourceProblem NameDifficultyTagsSolution
KattisVery HardView Solution
CFVery HardCheck CF
CFVery HardCheck CF

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