제출 #51768

#	제출 시각UTC-0	아이디	문제	언어	결과	실행 시간	메모리
51768	2018-06-21 04:54:37	model_code	Sandwich (JOI16_sandwich)	C++17	100 / 100	3329 ms	9096 KiB

sandwich

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#include <cstdio>
#include <iostream>
#include <vector>
#include <string>
#define rep(i,n) for (int i = 0; i < n; ++i)
using namespace std;
typedef vector<int> VI;
typedef vector<VI > VVI;
const int INF = 1001001001;
const int di[] = {-1,0,1,0}, dj[] = {0,-1,0,1}; //^<v>
int h, w;
VVI used, dv;
int dfs(int i, int j, int v) {
  if (used[i][j] == 1) return INF;
  if (used[i][j] == 2) return 0;
  int res = 2;
  used[i][j] = 1;
  rep(k,2) {
    int nv = v^(dv[i][j]*k);
    int ni = i + di[nv], nj = j + dj[nv];
    if (ni < 0 || nj < 0 || ni >= h || nj >= w) continue;
    int r = dfs(ni,nj,nv);
    if (r == INF) return INF;
    res += r;
  }
  used[i][j] = 2;
  return res;
}
 
 
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• Subtask 1: 35 / 35
• Subtask 2: 65 / 65