Submission #13561

#TimeUsernameProblemLanguageResultExecution timeMemory
13561baneling100Wiring (kriii2_W)C++98
1 / 4
0 ms1084 KiB
#include <stdio.h>

long long N;

int main(void) {

    scanf("%lld",&N);
    printf("%d",N%2?N/2:N-1);

    return 0;
}
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