Submission #7801

#	Time	Username	Problem	Language	Result	Execution time	Memory
7801		ggoh	다각형 (GA5_polygon)	C++98	100 / 100	0 ms	1088 KiB

polygon

#include<cstdio>
long long a,b,x;
main()
{
	scanf("%lld%lld",&a,&b);
	if(a<3&&b>1)x=2;
	b/=2;
	a-=1;
	a/=2;
	printf("%lld",2*((b+1)*b/2-(a+1)*a/2)-x);
} 

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