Submission #1360110

#	Time	Username	Problem	Language	Result	Execution time	Memory
1360110		jahongir	Triangles (CEOI18_tri)	C++20	35 / 100	5 ms	436 KiB

tri

#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++){
			bool a = false, b = false;
			for(int k = 1; k <= N; k++) if(i!=k && j!=k){
				if(is_clockwise(i,j,k)) a = true;
				else b = true;
				if(a && b) break;
			}
			if(!(a && b)) cnt++;
		}

	give_answer(cnt);

}

• Subtask 1: 15 / 15
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 20 / 20
• Subtask 5: 0 / 25