Submission #1589426

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Source Code Expand

#define _CRT_SECURE_NO_WARNINGS

#include<stdio.h>
#include<stdlib.h>

typedef struct
{
	int x, y;
}Point;

int vx[] = { 1, -1, 0, 0 };
int vy[] = { 0, 0, 1, -1 };

int exp(char c[][500], int sx, int sy, int gx, int gy)
{
	Point q[25000];
	signed char f[500][500];
	int front = 0, rear = 0, i, j;

	for (i = 0; i < 500; i++)
		for (j = 0; j < 500; j++)
			f[i][j] = -1;

	q[front].x = sx;
	q[front].y = sy;

	f[sy][sx] = 0;

	while (front <= rear)
	{
		int tx = q[front].x, ty = q[front].y;

		for (i = 0; i < 4; i++)
			if (c[ty + vy[i]][tx + vx[i]] != '#' && f[ty + vy[i]][tx + vx[i]] == -1)
			{
				f[ty + vy[i]][tx + vx[i]] = f[ty][tx] + 1;
				rear++;
				q[rear].x = tx + vx[i];
				q[rear].y = ty + vy[i];
			}

		front++;
	}

	return f[gy][gx];
}

int main()
{
	int n, m, i, j, sx, sy, cx, cy, gx, gy;
	char c[500][500];

	scanf("%d%d", &n, &m);
	getchar();

	for (i = 0; i < n; i++)
	{
		for (j = 0; j < m; j++)
			if ((c[i][j] = getchar()) == 'S')
			{
				sx = j;
				sy = i;
			}
			else if (c[i][j] == 'C')
			{
				cx = j;
				cy = i;
			}
			else if (c[i][j] == 'G')
			{
				gx = j;
				gy = i;
			}

		getchar();
	}

	if (exp(c, sx, sy, cx, cy) == -1 || exp(c, cx, cy, gx, gy) == -1)
		puts("-1");
	else
		printf("%d\n", exp(c, sx, sy, cx, cy) + exp(c, cx, cy, gx, gy));

	return 0;
}

Submission Info

Compile Error

./Main.c:14:5: warning: conflicting types for built-in function ‘exp’
 int exp(char c[][500], int sx, int sy, int gx, int gy)
     ^
./Main.c: In function ‘main’:
./Main.c:53:2: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &n, &m);
  ^

Judge Result