摘要:
1 #include <iostream> 2 #include <cstdio> 3 #include <algorithm> 4 #include <cstring> 5 #include <string> 6 using namespace std; 7 typedef long long l 阅读全文
posted @ 2020-04-30 17:21
swsyya
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摘要:
设 \[f\left ( a,b,c,n\right )=\sum_{i=0}^{n}\left \lfloor \frac{ai+b}{c}\right \rfloor\] 当\(\left ( a\geq c\right )\parallel\left ( b\geq c\right )\)时, 阅读全文
posted @ 2020-04-30 16:37
swsyya
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