| # | Time | Username | Problem | Language | Result | Execution time | Memory |
|---|---|---|---|---|---|---|---|
| 7877 | comet | 다각형 (GA5_polygon) | C++98 | 0 ms | 1672 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<iostream>
int main(){
int a,b;
std::cin>>a>>b;
if(a%2)a++;
if(b%2)b--;
if(a<4)a=4;
if(b<4)std::cout<<"0";
else std::cout<<(a+b)*(b-a+2)/2;
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