제출 #2845

#제출 시각아이디문제언어결과실행 시간메모리
2845ansol4328다각형 (GA5_polygon)C++98
0 / 100
0 ms1088 KiB
#include<stdio.h>

int main()
{
    unsigned long long a, b, sum;

    scanf("%llu %llu",&a,&b);
    b/=2;
    sum=b*(b+1);
    sum-=2;
    printf("%llu",sum);
    return 0;
}
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