제출 #585084

#제출 시각아이디문제언어결과실행 시간메모리
585084hibikiTriangles (CEOI18_tri)C++11
35 / 100
7 ms300 KiB
#include<bits/stdc++.h>
#include<trilib.h>
using namespace std;

#define pb push_back
#define sz(x) (int)x.size()

int n, cnt = 0;
vector<int> v;

int main()
{
    n = get_n();
    for(int i = 1; i <= n; i++)
	{
		for(int j = 1; j <= n; j++)
		{
			if(i == j) continue;
			bool ok = true;
			for(int k = 1; k <= n; k++)
			{
				if(i == k || j == k) continue;
				if(!is_clockwise(i, j, k))
				{
					ok = false;
					break;
				}
			}
			if(ok)
				cnt++;
		}
	}
	printf("%d\n",cnt);
    return 0;
}
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