Submission #6156817


Source Code Expand

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

static const int MAX_H = 500;
static const int MAX_W = 500;

int H, W;
int sh = -1, sw = -1, gh = -1, gw = -1;
char grid[MAX_H][MAX_W + 1];
bool reached[MAX_H][MAX_W];

//#define OCTAS
#ifdef OCTAS
static const int dh[]{-1, -1, -1, 0, 0, +1, +1, +1};
static const int dw[]{-1, 0, +1, -1, +1, -1, 0, +1};
#else
static const int dh[]{-1, 0, 0, +1};
static const int dw[]{0, -1, +1, 0};
#endif

void initialize() {
//  memset(reached, 0, sizeof(reached));
  fill_n(reached[0], MAX_H * MAX_W, false);
}

bool dfs(int h, int w) {
  if (h == gh && w == gw)
    return true;
  reached[h][w] = true;

  for (int i{}; i < sizeof(dh) / sizeof(int); ++i) {
    int nh = h + dh[i];
    if (nh < 0 || nh >= H)
      continue;
    int nw = w + dw[i];
    if (nw < 0 || nw >= W)
      continue;
    if (grid[nh][nw] == '#' || reached[nh][nw])
      continue;
    if (dfs(nh, nw))
      return true;
  }

  return false;
}

int main() {
  initialize();
  scanf("%d%d", &H, &W);
  for (int h = 0; h < H; ++h) {
    scanf("%s", &grid[h][0]);
    if (sh < 0 || gh < 0) {
      for (int w{}; w < W; ++w) {
        if (grid[h][w] == 's') {
          sh = h;
          sw = w;
        } else if (grid[h][w] == 'g') {
          gh = h;
          gw = w;
        }
      }
    }
  }

  printf("%s\n", dfs(sh, sw) ? "Yes" : "No");
//  printf("%d\n", bfs(sh, sw));
  return 0;
}

Submission Info

Submission Time
Task A - 深さ優先探索
User tatsu
Language C++14 (GCC 5.4.1)
Score 100
Code Size 1491 Byte
Status AC
Exec Time 7 ms
Memory 6016 KB

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:50:24: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d", &H, &W);
                        ^
./Main.cpp:52:29: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%s", &grid[h][0]);
                             ^

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 100 / 100
Status
AC × 5
AC × 83
Set Name Test Cases
Sample 00_sample_01.txt, 00_sample_02.txt, 00_sample_03.txt, 00_sample_04.txt, 00_sample_05.txt
All 00_min_01.txt, 00_min_02.txt, 00_min_03.txt, 00_min_04.txt, 00_min_05.txt, 00_min_06.txt, 00_min_07.txt, 00_min_08.txt, 00_sample_01.txt, 00_sample_02.txt, 00_sample_03.txt, 00_sample_04.txt, 00_sample_05.txt, 01_rnd_00.txt, 01_rnd_01.txt, 01_rnd_02.txt, 01_rnd_03.txt, 01_rnd_04.txt, 01_rnd_05.txt, 01_rnd_06.txt, 01_rnd_07.txt, 01_rnd_08.txt, 01_rnd_09.txt, 01_rnd_10.txt, 01_rnd_11.txt, 01_rnd_12.txt, 01_rnd_13.txt, 01_rnd_14.txt, 01_rnd_15.txt, 01_rnd_16.txt, 01_rnd_17.txt, 01_rnd_18.txt, 01_rnd_19.txt, 02_rndhard_00.txt, 02_rndhard_01.txt, 02_rndhard_02.txt, 02_rndhard_03.txt, 02_rndhard_04.txt, 02_rndhard_05.txt, 02_rndhard_06.txt, 02_rndhard_07.txt, 02_rndhard_08.txt, 02_rndhard_09.txt, 02_rndhard_10.txt, 02_rndhard_11.txt, 02_rndhard_12.txt, 02_rndhard_13.txt, 02_rndhard_14.txt, 02_rndhard_15.txt, 02_rndhard_16.txt, 02_rndhard_17.txt, 02_rndhard_18.txt, 02_rndhard_19.txt, 02_rndhard_20.txt, 02_rndhard_21.txt, 02_rndhard_22.txt, 02_rndhard_23.txt, 02_rndhard_24.txt, 02_rndhard_25.txt, 02_rndhard_26.txt, 02_rndhard_27.txt, 02_rndhard_28.txt, 02_rndhard_29.txt, 02_rndhard_30.txt, 02_rndhard_31.txt, 02_rndhard_32.txt, 02_rndhard_33.txt, 02_rndhard_34.txt, 02_rndhard_35.txt, 02_rndhard_36.txt, 02_rndhard_37.txt, 02_rndhard_38.txt, 02_rndhard_39.txt, 03_rndhardsmall_00.txt, 03_rndhardsmall_01.txt, 03_rndhardsmall_02.txt, 03_rndhardsmall_03.txt, 03_rndhardsmall_04.txt, 03_rndhardsmall_05.txt, 03_rndhardsmall_06.txt, 03_rndhardsmall_07.txt, 03_rndhardsmall_08.txt, 03_rndhardsmall_09.txt
Case Name Status Exec Time Memory
00_min_01.txt AC 1 ms 512 KB
00_min_02.txt AC 1 ms 512 KB
00_min_03.txt AC 1 ms 512 KB
00_min_04.txt AC 1 ms 512 KB
00_min_05.txt AC 1 ms 512 KB
00_min_06.txt AC 1 ms 512 KB
00_min_07.txt AC 1 ms 512 KB
00_min_08.txt AC 1 ms 512 KB
00_sample_01.txt AC 1 ms 512 KB
00_sample_02.txt AC 1 ms 512 KB
00_sample_03.txt AC 1 ms 512 KB
00_sample_04.txt AC 1 ms 512 KB
00_sample_05.txt AC 1 ms 512 KB
01_rnd_00.txt AC 2 ms 768 KB
01_rnd_01.txt AC 7 ms 6016 KB
01_rnd_02.txt AC 4 ms 1664 KB
01_rnd_03.txt AC 6 ms 4736 KB
01_rnd_04.txt AC 3 ms 1280 KB
01_rnd_05.txt AC 2 ms 768 KB
01_rnd_06.txt AC 6 ms 2560 KB
01_rnd_07.txt AC 6 ms 3456 KB
01_rnd_08.txt AC 2 ms 768 KB
01_rnd_09.txt AC 2 ms 768 KB
01_rnd_10.txt AC 6 ms 1024 KB
01_rnd_11.txt AC 2 ms 768 KB
01_rnd_12.txt AC 7 ms 4992 KB
01_rnd_13.txt AC 4 ms 2048 KB
01_rnd_14.txt AC 2 ms 768 KB
01_rnd_15.txt AC 3 ms 1024 KB
01_rnd_16.txt AC 2 ms 768 KB
01_rnd_17.txt AC 7 ms 1408 KB
01_rnd_18.txt AC 2 ms 768 KB
01_rnd_19.txt AC 3 ms 1536 KB
02_rndhard_00.txt AC 2 ms 768 KB
02_rndhard_01.txt AC 2 ms 768 KB
02_rndhard_02.txt AC 3 ms 768 KB
02_rndhard_03.txt AC 3 ms 768 KB
02_rndhard_04.txt AC 2 ms 768 KB
02_rndhard_05.txt AC 2 ms 768 KB
02_rndhard_06.txt AC 2 ms 768 KB
02_rndhard_07.txt AC 2 ms 768 KB
02_rndhard_08.txt AC 2 ms 768 KB
02_rndhard_09.txt AC 3 ms 768 KB
02_rndhard_10.txt AC 3 ms 768 KB
02_rndhard_11.txt AC 3 ms 768 KB
02_rndhard_12.txt AC 2 ms 768 KB
02_rndhard_13.txt AC 2 ms 768 KB
02_rndhard_14.txt AC 3 ms 768 KB
02_rndhard_15.txt AC 3 ms 768 KB
02_rndhard_16.txt AC 2 ms 768 KB
02_rndhard_17.txt AC 2 ms 768 KB
02_rndhard_18.txt AC 2 ms 768 KB
02_rndhard_19.txt AC 2 ms 768 KB
02_rndhard_20.txt AC 2 ms 768 KB
02_rndhard_21.txt AC 2 ms 768 KB
02_rndhard_22.txt AC 3 ms 768 KB
02_rndhard_23.txt AC 2 ms 768 KB
02_rndhard_24.txt AC 2 ms 768 KB
02_rndhard_25.txt AC 2 ms 768 KB
02_rndhard_26.txt AC 2 ms 768 KB
02_rndhard_27.txt AC 2 ms 768 KB
02_rndhard_28.txt AC 2 ms 768 KB
02_rndhard_29.txt AC 2 ms 768 KB
02_rndhard_30.txt AC 2 ms 768 KB
02_rndhard_31.txt AC 2 ms 768 KB
02_rndhard_32.txt AC 2 ms 768 KB
02_rndhard_33.txt AC 2 ms 768 KB
02_rndhard_34.txt AC 2 ms 768 KB
02_rndhard_35.txt AC 2 ms 768 KB
02_rndhard_36.txt AC 2 ms 768 KB
02_rndhard_37.txt AC 2 ms 768 KB
02_rndhard_38.txt AC 2 ms 768 KB
02_rndhard_39.txt AC 2 ms 768 KB
03_rndhardsmall_00.txt AC 1 ms 512 KB
03_rndhardsmall_01.txt AC 1 ms 512 KB
03_rndhardsmall_02.txt AC 1 ms 512 KB
03_rndhardsmall_03.txt AC 1 ms 512 KB
03_rndhardsmall_04.txt AC 1 ms 512 KB
03_rndhardsmall_05.txt AC 1 ms 512 KB
03_rndhardsmall_06.txt AC 1 ms 512 KB
03_rndhardsmall_07.txt AC 1 ms 512 KB
03_rndhardsmall_08.txt AC 1 ms 512 KB
03_rndhardsmall_09.txt AC 1 ms 512 KB