## 5 Ways of Taking Input in PythonTo use Python in competitive programming, you will have to know how to take input from stdin. |

## Euler's Totient FunctionIf you are given a number N, you have to determine how many integers between 1 and N have a GCD of 1 with N. |

## Binary SearchFinding a number in a sorted array using binary search. |

## Sieve of EratosthenesA beginner's number theory tutorial on Sieve of Eratosthenes. |

## Faster I/OLearn how to use faster I/O methods in sport programming. |

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