Submission #7575742

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Source Code Expand

#include <climits>
#include <cstdio>
#include <iostream>
#include <algorithm>
#include <vector>
#include <queue>
#include <numeric>
#include <cassert>
#include <utility>
#include <tuple>

#define dprintf
#define debug 1

using namespace std;

int h, w;
char c[500][500];

bool dfs(int x, int y) {
    int d[] = {0, -1, 1};
    if (c[y][x] == 'g') {
        return true;
    }
    c[y][x] = '#';

    for (int dx : d) {
        for (int dy : d) {
            int next_x = x + dx;
            int next_y = y + dy;
            if ((dx == 0 && dy == 0) 
                || next_x < 0 || next_x >= w 
                || next_y < 0 || next_y >= h
                || c[next_y][next_x] == '#') {
                continue;
            }
            bool next = dfs(next_x, next_y);
            if (next) {
                return true;
            }
        }
    }
    return false;
}

int main() {
    pair<int, int> start, goal;
    scanf(" %d %d", &h, &w);
    dprintf("%d %d\n", h, w);
    for (int i = 0; i < h; i++) {
        for (int j = 0; j < w; j++) {
            scanf(" %c", &c[i][j]);
            if (c[i][j] == 's') {
                start = make_pair(i, j);
            } else if (c[i][j] == 'g') {
                goal = make_pair(i, j);
            }
        }
    }

    for (int i = 0; i < h; i++) {
        for (int j = 0; j < w; j++) {
            dprintf("%c ", c[i][j]);
        }
        dprintf("\n");
    }

    printf("%s\n", dfs(start.first, start.second) ? "Yes" : "No");

    return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:48:28: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf(" %d %d", &h, &w);
                            ^
./Main.cpp:52:35: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
             scanf(" %c", &c[i][j]);
                                   ^

Judge Result