제출 #428555

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
428555		pavement	Park (JOI17_park)	C++17	컴파일 에러	0 ms	0 KiB

park

#include "park.h"
#include <bits/stdc++.h>
using namespace std;

#define mp make_pair
#define pb push_back

static int Place[1405], link[1405], sz[1405];

int find(int x) {
	if (x == link[x]) return x;
	return link[x] = find(link[x]);
}

void unite(int a, int b) {
	a = find(a);
	b = find(b);
	if (a == b) return;
	if (sz[b] > sz[a]) swap(a, b);
	sz[a] += sz[b];
	link[b] = a;
}

void solve(int l, int r) {
	if (find(l) == find(r)) return;
	int lo = 0, hi = N - 1, ans = -1;
	while (lo <= hi) {
		int mid = (lo + hi) / 2;
		memset(Place, 0, sizeof Place);
		for (int i = 0; i <= mid; i++)
			Place[i] = 1;
		Place[l] = Place[r] = 1;
		if (l >= r ? Ask(r, l, Place) : Ask(l, r, Place)) ans = mid, hi = mid - 1;
		else lo = mid + 1;
	}
	if (ans == 0) {
		l >= r ? Answer(r, l) : Answer(l, r);
		unite(l, r);
	} else {
		solve(l, ans);
		solve(ans, r);
	}
}

컴파일 시 표준 에러 (stderr) 메시지

park.cpp: In function 'void solve(int, int)':
park.cpp:26:19: error: 'N' was not declared in this scope
   26 |  int lo = 0, hi = N - 1, ans = -1;
      |                   ^
park.cpp:33:53: error: 'ans' was not declared in this scope; did you mean 'abs'?
   33 |   if (l >= r ? Ask(r, l, Place) : Ask(l, r, Place)) ans = mid, hi = mid - 1;
      |                                                     ^~~
      |                                                     abs
park.cpp:36:6: error: 'ans' was not declared in this scope; did you mean 'abs'?
   36 |  if (ans == 0) {
      |      ^~~
      |      abs