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位运算计算出每一个当前2n(n的范围是0道2n-1)然后加上字符'0'就可以 #include <iostream> #include <cstring> #include <algorithm> using namespace std; int main() { int n; cin >> n; 阅读全文
posted @ 2021-04-15 21:01
梨花满地
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题目描述 Lightning McQueen, Strip Weathers, and Chick Hicks are cars that compete in different races against each other. Some races — such as the Piston C 阅读全文
posted @ 2021-04-15 20:31
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#### 题目描述 Merida wants some help in predicting her score for an archery tournament. When she fires an arrow, we can compute that arrow’s trajectory gi 阅读全文
posted @ 2021-04-15 20:12
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