제출 #746538

#제출 시각아이디문제언어결과실행 시간메모리
746538vjudge1Triangles (CEOI18_tri)C++17
35 / 100
561 ms340 KiB
#include <bits/stdc++.h> #include <trilib.h> using namespace std; int main(){ ios::sync_with_stdio(0), cin.tie(0), cout.tie(0); int n = get_n() , cnt1 = 0 , cnt2 = 0; set<int> st; for(int i = 1 ; i <= n ; i++){ for(int j = 1 ; j < i ; j++){ for(int k = 1 ; k <= n ; k++){ if(k == i || k == j) continue; bool ch = is_clockwise(i , j , k); if(ch == 1) cnt1++; else cnt2++; } if(cnt1 && cnt2){ cnt1 = cnt2 = 0; continue; } st.insert(i); st.insert(j); cnt1 = cnt2 = 0; } } int sz = (int)st.size(); cout << sz << '\n'; return 0; }
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