Internship← Competitive Programming learning pathCompetitive Programming · Module 3 of 10
Fast input/output and templates
Read big inputs fast and keep a clean starting template.
📖 Key ideas
- In C++, ios::sync_with_stdio(false) and cin.tie(nullptr) speed up cin/cout.
- Use \n instead of endl to avoid flushing every line.
- In Python, read all input with sys.stdin.readline or sys.stdin.buffer.
- A template holds includes, fast IO and common helpers.
- Handle multiple test cases with an outer loop over t.
💡 Real-life example: Fast IO is like using a conveyor belt instead of carrying boxes one by one.
sync_with_stdio(false)Unties C and C++ streams for speed
endlNewline plus flush
sys.stdin.readlineFast line reading in Python
TemplateReusable starting code