제출 #4330

#제출 시각아이디문제언어결과실행 시간메모리
4330ansol4328다각형 (GA5_polygon)C++98
100 / 100
0 ms1088 KiB
#include<stdio.h>

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

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