Submission #3174

#	Time	Username	Problem	Language	Result	Execution time	Memory
3174		myungwoo	다각형 (GA5_polygon)	C++98	100 / 100	0 ms	1672 KiB

polygon

#include <iostream>
using namespace std;

typedef long long lld;

lld A,B;

int main()
{
	cin >> A >> B;
	if (A&1) A++;
	if (B&1) B--;
	if (A < 3) A = 4;
	if (A <= B) cout << (A+B)*((B-A)/2+1)/2 << endl;
	else cout << "0\n";
}

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