제출 #378376

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
378376	2021-03-16 15:23:49	qwerty234	Furniture (JOI20_furniture)	C++14	100 / 100	670 ms	27780 KiB

furniture

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#include <bits/stdc++.h>
#define ll long long
#define fi first
#define se second
#define pb push_back
using namespace std;
const int MAXN = 1e3 + 10, inf = 2e9;
int n, m, q, a[MAXN][MAXN], b[MAXN][MAXN], c[MAXN][MAXN], dia[MAXN][MAXN], cnt[2 * MAXN];
void dfs1(int i, int j) {
  if (i < 1 || n < i || j < 1 || m < j || b[i][j] == 0)
    return;
  b[i][j] = (b[i - 1][j] | b[i][j - 1]);
  if (b[i][j] == 0) cnt[dia[i][j]] -= (b[i][j] | c[i][j]), dfs1(i + 1, j), dfs1(i, j + 1);
}
void dfs2(int i, int j) {
  if (i < 1 || n < i || j < 1 || m < j || c[i][j] == 0)
    return;
  c[i][j] = (c[i + 1][j] | c[i][j + 1]);
  if (c[i][j] == 0) cnt[dia[i][j]] -= (b[i][j] | c[i][j]), dfs2(i - 1, j), dfs2(i, j - 1);
}
void add(int i, int j) {
  cnt[dia[i][j]] -= (b[i][j] & c[i][j]);
  b[i][j] = c[i][j] = 0;
  dfs1(i + 1, j); dfs1(i, j + 1);
 
 
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컴파일 시 표준 에러 (stderr) 메시지

furniture.cpp:59:6: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   59 | main() {
      |      ^
furniture.cpp: In function 'int main()':
furniture.cpp:61:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   61 |   scanf("%d %d", &n, &m);
      |   ~~~~~^~~~~~~~~~~~~~~~~
furniture.cpp:64:12: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   64 |       scanf("%d", &a[i][j]);
      |       ~~~~~^~~~~~~~~~~~~~~~
furniture.cpp:65:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   65 |   scanf("%d", &q);
      |   ~~~~~^~~~~~~~~~
furniture.cpp:69:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   69 |     scanf("%d %d", &i, &j);
      |     ~~~~~^~~~~~~~~~~~~~~~~

• Subtask 1: 5 / 5
• Subtask 2: 95 / 95