Submission #3731780

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Source Code Expand

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

#define MIN(x, y) ((x) < (y) ? (x) : (y))
#define MAX(x, y) ((x) > (y) ? (x) : (y))

#define DIVUP(x, y) (((x) + ((y) - 1)) / (y))
#define DIVOFF(x, y) (((x) + ((y) / 2)) / (y))
#define REMAINDER(x, y) ((x) % (y))

#define H_MAX 10
#define W_MAX 10
char grid[H_MAX][W_MAX + 1];
bool reached[H_MAX][W_MAX];
int land_num;
int count;

bool dfs(int h, int w) {
  if (h < 0 || h >= H_MAX || w < 0 || w >= W_MAX || reached[h][w] ||
      (::count == 0 && grid[h][w] == 'o') || (::count > 0 && grid[h][w] == 'x'))
    return false;
  reached[h][w] = true;
  ++::count;
  if (::count > land_num) return true;

  if (dfs(h - 1, w)) return true;
  if (dfs(h + 1, w)) return true;
  if (dfs(h, w - 1)) return true;
  if (dfs(h, w + 1)) return true;

  return false;
}

int main() {
  for (int h{0}; h < H_MAX; ++h) {
    scanf("%10s", &grid[h][0]);
    for (int w{0}; w < W_MAX; ++w) {
      if (grid[h][w] == 'o') ++land_num;
    }
  }

  bool ans;
  for (int h{0}; h < H_MAX; ++h) {
    for (int w{0}; w < W_MAX; ++w) {
      memset(reached, 0, sizeof reached);
      ::count = 0;
      ans = dfs(h, w);
      if (ans) goto END;
    }
  }

  END:
  printf("%s\n", ans ? "YES" : "NO");
  return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:38:31: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%10s", &grid[h][0]);
                               ^

Judge Result