题解 | #旅游观光#
旅游观光
https://ac.nowcoder.com/acm/problem/14891
#include<bits/stdc++.h>
using namespace std;
int main()
{
int n;
cin>>n;
cout<<(n-1)/2;
return 0;
}
旅游观光
https://ac.nowcoder.com/acm/problem/14891
#include<bits/stdc++.h>
using namespace std;
int main()
{
int n;
cin>>n;
cout<<(n-1)/2;
return 0;
}
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