Submission #16522

#TimeUsernameProblemLanguageResultExecution timeMemory
16522hongjun7Wiring (kriii2_W)C++98
4 / 4
0 ms1084 KiB
#include <stdio.h>
long long n;
int main() {
	scanf("%lld", &n);
	if (n & 1) printf("%lld", n / 2);
	else printf("%lld", n - 1);
}
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