Submission #2906

#TimeUsernameProblemLanguageResultExecution timeMemory
2906zyslee다각형 (GA5_polygon)C++98
0 / 100
0 ms1088 KiB
#include <stdio.h>
int main()
{
	long long int a, b, ans, aa, bb;
	scanf("%lld %lld", &a, &b);
	if(b<3){
		printf("0");
		return 0;
	}
	if(a<3) a = 3;
	aa = (a+1)/2*2;
	bb = (b+1)/2*2;
	ans = (bb+aa)*(bb-aa+2)/4;
	printf("%lld", ans);
}
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