Submission #2843

#	Time	Username	Problem	Language	Result	Execution time	Memory
2843		ansol4328	다각형 (GA5_polygon)	C++98	0 / 100	0 ms	1088 KiB

polygon

#include<stdio.h>

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

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

• Subtask 1: 0 / 60
• Subtask 2: 0 / 10
• Subtask 3: 0 / 30