제출 #8399

#제출 시각아이디문제언어결과실행 시간메모리
8399cki86201Wiring (kriii2_W)C++98
4 / 4
0 ms1088 KiB
#include<stdio.h>

int main()
{
	long long n;scanf("%lld",&n);printf("%lld",(n&1)?n/2:n-1);
	return 0;
}
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