Submission #2874

#TimeUsernameProblemLanguageResultExecution timeMemory
2874pl0892029다각형 (GA5_polygon)C++98
100 / 100
0 ms1088 KiB
#include <cstdio>

int main() {
	int a,b;
	scanf("%d %d",&a,&b);
	if( a<3 ) a=3;
	if( b<a ) b=a-1;
	a++;
	a/=2, b/=2;
	printf("%lld",(long long)(b-a+1)*(a+b));
}
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