Submission #1141451

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Source Code Expand

#include<stdio.h>
#include<vector>
#include<algorithm>
using namespace std;
int dx[4] = { 0,1,0,-1 };
int dy[4] = { 1,0,-1,0 };
char dc[4] = { 'R','D','L','U' };
bool flag[50][50];
int dat[50][50];
typedef pair<int, int>pii;
vector<char>ans;
void dfs(int x, int y)
{
	if (ans.size() >= 2500)return;
	flag[x][y] = true;
	for (int i = 0; i < 4; i++)
	{
		if (dat[x + dx[i]][y + dy[i]] == 0 && (!flag[x + dx[i]][y + dy[i]]))
		{
			ans.push_back(dc[i]);
			dfs(x + dx[i], y + dy[i]);
			ans.push_back(dc[(i + 2) % 4]);
		}
	}
}
int main()
{
	int mx, my, kai, sx, sy;
	scanf("%d%d%d%d%d", &mx, &my, &kai, &sx, &sy);
	sx--, sy--;
	for (int i = 0; i < mx; i++)
	{
		for (int j = 0; j < my; j++)
		{
			char z;
			scanf(" %c", &z);
			if (z == '#')dat[i][j] = 1;
		}
	}
	dfs(sx, sy);
	for (int i = ans.size(); i < 2500; i++)ans.push_back('-');
	for (int i = 0; i < 2500; i++)printf("%c", ans[i]); printf("\n");
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:29:47: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d%d%d%d", &mx, &my, &kai, &sx, &sy);
                                               ^
./Main.cpp:36:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
    scanf(" %c", &z);
                    ^

Judge Result