Submission #7878

#	Time	Username	Problem	Language	Result	Execution time	Memory
7878		comet	다각형 (GA5_polygon)	C++98	0 / 100	0 ms	1672 KiB

polygon

#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 if(a==b)std::cout<<a;
  else std::cout<<(a+b)*(b-a+2)/2;
}

• Subtask 1: 0 / 60
• Subtask 2: 0 / 10
• Subtask 3: 0 / 30