题解 | #旅游观光#
旅游观光
https://ac.nowcoder.com/acm/contest/18839/1044
#include<iostream> using namespace std; int main() { int n; cin>>n; cout<<(n-1)/2<<endl; }
旅游观光
https://ac.nowcoder.com/acm/contest/18839/1044
#include<iostream> using namespace std; int main() { int n; cin>>n; cout<<(n-1)/2<<endl; }
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