# | Time | Username | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
2816 | gs13105 | 다각형 (GA5_polygon) | C++98 | 0 ms | 1088 KiB |
This submission is migrated from previous version of oj.uz, which used different machine for grading. This submission may have different result if resubmitted.
#include <stdio.h>
int main()
{
long long a,b,n;
scanf("%lld%lld",&a,&b);
if(a%2==1)
a++;
n=(b-a)/2+1;
printf("%lld",n*(a+n-1));
return 0;
}
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