Submission #2743

#	Time	Username	Problem	Language	Result	Execution time	Memory
2743		kriii	다각형 (GA5_polygon)	C++98	100 / 100	0 ms	1088 KiB

polygon

#include <stdio.h>

int main()
{
	long long a,b,c=0;

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

	return 0;
}

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