Submission #2850

#	Time	Username	Problem	Language	Result	Execution time	Memory
2850		6590f1	다각형 (GA5_polygon)	C++98	100 / 100	0 ms	1088 KiB

polygon

#include <stdio.h>
int main ()
{
    long long int a,b,sum=0;
    scanf("%lld %lld",&a,&b);
    if(a%2==0)a=a-2;
    a=a-a%2;
    b=b-b%2;
    sum=(b/2)*(b/2+1)-(a/2)*(a/2+1);
    if(a<=1)sum=sum-2;
    if(a+b==0)sum=0;
    printf("%lld",sum);
    return 0;
}

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