Problem - 1342E - Codeforces
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Codeforces. Programming competitions and contests, programming community
CF1342E Placing Rooks（第二类斯特林数）-CSDN博客
E. Mike and Foam（容斥原理）_mob604756e72afd的技术博客_51CTO博客
Codeforces 1342 E. Placing Rooks（容斥）-CSDN博客
Problem - 1342E - Codeforces
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