Day 60
Day 60: Competitive Programming Techniques and Wrap-up
60/60 Days
Day 60: Competitive Programming Techniques and Wrap-up #
Welcome to the final day of our 60 Days of Coding Algorithm Challenge! Today, we’ll cover some key competitive programming techniques and wrap up our journey through algorithms and data structures.
Competitive Programming Techniques #
1. Fast I/O #
For competitive programming, fast input/output is crucial. In Python, you can use:
1import sys
2input = sys.stdin.readline
3
4# For faster output
5from io import StringIO
6import sys
7out = StringIO()
8sys.stdout = out
2. Modular Arithmetic #
Useful for dealing with large numbers:
1MOD = 10**9 + 7
2
3def mod_add(a, b):
4 return (a + b) % MOD
5
6def mod_mult(a, b):
7 return (a * b) % MOD
3. Binary Search #
Quick way to search in sorted arrays or find optimal values:
1def binary_search(arr, target):
2 left, right = 0, len(arr) - 1
3 while left <= right:
4 mid = (left + right) // 2
5 if arr[mid] == target:
6 return mid
7 elif arr[mid] < target:
8 left = mid + 1
9 else:
10 right = mid - 1
11 return -1
4. Two Pointers Technique #
Useful for array …
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