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这题简直就是..............当初不理解题意,搞不懂,后来看到nr们解释,恍然大悟
就是问确定一个数n,无论哪种情况翻n次都满足正面或反面全部向上,但不能小于2次
所以如果是偶数个硬币的话就要无解xxxo
如果是偶数就是n-1
知道题意后我很无语
#include <iostream>
using namespace std;
int main()
{
int n;
while(cin>>n&&n)
{
if(n%2==0) { cout<<"No Solution!"<<endl; continue;}
else
cout<<n-1<<endl;
}
return 0;
}
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