제출 #1360107

#제출 시각아이디문제언어결과실행 시간메모리
1360107jahongirTriangles (CEOI18_tri)C++20
35 / 100
5 ms436 KiB
#include "trilib.h"
#include <bits/stdc++.h>
using namespace std;


signed main(){
	int N = get_n();

	int cnt = 0;

	for(int i = 1; i < N; i++)
		for(int j = i+1; j <= N; j++){
			int a = 0, b = 0;
			for(int k = 1; k <= N; k++) if(i!=k && j!=k){
				bool c = is_clockwise(i,j,k);
				a += c;
				b += !c;
				if(a && b) break;
			}
			if(min(a,b)==0) cnt++;
		}

	give_answer(cnt);

}
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