제출 #585061

#제출 시각아이디문제언어결과실행 시간메모리
585061hibikiTriangles (CEOI18_tri)C++11
컴파일 에러
0 ms0 KiB
#include<bits/stdc++.h> using namespace std; #define pb push_back #define sz(x) (int)x.size() // static int N; // static long long *x, *y; // static int queries=0; // // static void init() { // static int is_inited=0; // if (is_inited) // return; // is_inited=1; // assert(scanf("%d", &N)==1); // x=(long long*)malloc((N+1)*sizeof(long long)); // y=(long long*)malloc((N+1)*sizeof(long long)); // for (int i=1; i<=N; i++) // assert(scanf("%lld%lld", &x[i], &y[i])==2); // } // // int get_n() { // init(); // return N; // } // // int is_clockwise(int a, int b, int c) { // init(); // assert(a>=1 && a<=N); // assert(b>=1 && b<=N); // assert(c>=1 && c<=N); // assert(a!=b && a!=c && b!=c); // queries++; // if(queries == 1000 * 1000 + 1) // printf("Too many queries!"); // return (x[b]-x[a])*(y[c]-y[a])-(x[c]-x[a])*(y[b]-y[a])<0; // } // // void give_answer(int s) { // init(); // printf("%d\n", s); // } int n, cnt = 0, st; vector<int> v, stk1, stk2; int main() { n = get_n(); v.pb(1); v.pb(2); for(int i = 3; i <= n; i++) { while(sz(v) > 1 && is_clockwise(v[sz(v) - 2], v[sz(v) - 1], i)) v.pop_back(); v.pb(i); } cnt = 1; st = v[1]; int lst = v[1]; while(1) { for(int i = 1; i <= n; i++) { if(i == lst) continue; bool ok = true; for(int j = 1; j <= n; j++) { if(j == i || j == lst) continue; if(!is_clockwise(lst, i, j)) { ok = false; break; } } if(ok) { // printf("%d %d\n",lst,i); if(i == st) { give_answer(cnt); return 0; } cnt++; lst = i; break; } } } return 0; }

컴파일 시 표준 에러 (stderr) 메시지

tri.cpp: In function 'int main()':
tri.cpp:52:9: error: 'get_n' was not declared in this scope
   52 |     n = get_n();
      |         ^~~~~
tri.cpp:57:28: error: 'is_clockwise' was not declared in this scope
   57 |         while(sz(v) > 1 && is_clockwise(v[sz(v) - 2], v[sz(v) - 1], i))
      |                            ^~~~~~~~~~~~
tri.cpp:73:21: error: 'is_clockwise' was not declared in this scope
   73 |                 if(!is_clockwise(lst, i, j))
      |                     ^~~~~~~~~~~~
tri.cpp:84:21: error: 'give_answer' was not declared in this scope
   84 |                     give_answer(cnt);
      |                     ^~~~~~~~~~~