Submission #8853

#TimeUsernameProblemLanguageResultExecution timeMemory
8853gs13068Wiring (kriii2_W)C++98
4 / 4
0 ms1088 KiB
#include<cstdio>

int main()
{
  long long a;
  scanf("%lld",&a);
  if(a%2)printf("%lld",a/2);
  else printf("%lld",a-1);
}
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