Submission #7184501

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Source Code Expand

#include <cstdio>
#include <queue>
using namespace std;

struct node {
	int curr, step;
	node(int _c, int _s): curr(_c), step(_s) { }
};

const int d[] = { 1, -1, 5, -5, 10, -10 };
bool vis[101];
queue<node> q;

inline bool check(int x) {
	return ((x >= 0) & (x <= 100) & (!vis[x]));
}


int main() {
	int a, b;
	scanf("%d%d", &a, &b);
	q.push(node(a, 0));
	vis[a] = true;
	while(!q.empty()) {
		node tmp = q.front();
		q.pop();
		if(tmp.curr == b) {
			printf("%d\n", tmp.step);
			return 0;
		}
		for(register int k = 0; k < 6; ++k) {
			register int nx = tmp.curr + d[k];
			if(check(nx)) {
				q.push(node(nx, tmp.step + 1));
			}
		}
	}
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:21:23: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &a, &b);
                       ^

Judge Result