Submission #9804

#TimeUsernameProblemLanguageResultExecution timeMemory
9804moonrabbit2Wiring (kriii2_W)C++98
4 / 4
0 ms1088 KiB
#include <cstdio>
int main()
{
    unsigned long long n;
    scanf("%llu",&n);
    if(n%2)
        printf("%llu",n/2);
    else
        printf("%llu",n-1);
    return 0;
}
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