Submission #1200627

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Source Code Expand

#include<iostream>
#include<cstdio>
#include<string>
#include<algorithm>
#include<vector>
#include<queue>
#include<functional>
#include<map>
#include<cstring>
#include<unordered_map>
#include<set>
#include<string.h>
#define P pair<int,int>
using namespace std;

struct A {
	int x, y, used;
};
int a[500][500][2];
int dx[4] = { -1,0,0,1 }, dy[4] = { 0,-1,1,0 };
string b[500];
signed main() {
	memset(a, -1, sizeof(a));
	P s, g;
	int c, d; scanf("%d%d", &c, &d);
	for (int e = 0; e < c; e++) {
		cin >> b[e];
		for (int f = 0; f < d; f++) {
			if (b[e][f] == 'S') {
				s = P(e, f);
			}
			else if (b[e][f] == 'G') {
				g = P(e, f);
			}
		}
	}
	queue<A>Q;
	a[s.first][s.second][0] = 0;
	Q.push({ s.first,s.second,0 });
	while (Q.size()) {
		A i = Q.front(); Q.pop();
		for (int j = 0; j < 4; j++) {
			int ex = i.x + dx[j], ey = i.y + dy[j];
			if (b[ex][ey] == '#')continue;
			else if (b[ex][ey] == 'C') {
				if (a[ex][ey][1] == -1) {
					a[ex][ey][1] = a[i.x][i.y][i.used] + 1;
					Q.push({ ex,ey,1 });
				}
			}
			else {
				if (a[ex][ey][i.used] == -1) {
					a[ex][ey][i.used] = a[i.x][i.y][i.used] + 1;
					Q.push({ ex,ey,i.used });
				}
			}
		}
	}
	printf("%d\n", a[g.first][g.second][1]);
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:25:33: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  int c, d; scanf("%d%d", &c, &d);
                                 ^

Judge Result