CANCELLATION SANITY CHECK
Beginner
Difficulty: Easy Tags: Metrics & Evaluation
Story
A first-pass cancellation classifier needs one sanity-check number before the team invests in anything more sophisticated than accuracy.
The Math
Accuracy = (TP + TN) / n
Input Format
n
p_1 y_1
...
p_n y_n
Output Format
Scalar accuracy, 6 decimals.
Constraints
1 <= n <= 10^6- Time limit: 1.0 second.
Example
Input
6
1 1
0 0
1 0
1 1
0 0
0 1
Output
0.666667
Keywords
metrics-and-evaluation
Python
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