제출 #483220

#제출 시각아이디문제언어결과실행 시간메모리
483220MonarchuwuTriangles (CEOI18_tri)C++17
35 / 100
304 ms324 KiB
#include<iostream> #include<algorithm> #include "trilib.h" using namespace std; typedef long long ll; int n; int main() { ios_base::sync_with_stdio(false); cin.tie(NULL); n = get_n(); int cnt(0); for (int i = 1; i < n; ++i) for (int j = i + 1; j <= n; ++j) { int x(0); for (int k = 1; k <= n; ++k) if (k != i && k != j) x |= 1 << is_clockwise(i, j, k); if (x != 3) cnt += 2; } cout << cnt / 2 << '\n'; } /** /\_/\ * (= ._.) * / >0 \>1 **/
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