Submission #9223

#TimeUsernameProblemLanguageResultExecution timeMemory
9223kcm1700Wiring (kriii2_W)C++14
4 / 4
0 ms1088 KiB
#include <cstdio>
#include <cstring>
#include <algorithm>

using namespace std;
int main(){
  long long n;
  scanf("%lld",&n);
  if (n%2 == 0) printf("%lld\n", n-1);
  else printf("%lld\n", n/2);
  return 0;
}
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