Submission #246174

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
246174	2020-07-08T10:30:13 Z	mieszko11b	007 (CEOI14_007)	C++14	30 / 100	303 ms	23032 KB

007

#include <bits/stdc++.h>

using namespace std;

int n, m;
int s, d, a, b;
vector<int> G[200007];
int dist[200007];
bool vis[200007];

void run_bfs(int w) {
	memset(vis, 0, sizeof vis);
	vis[w] = 1;
	dist[w] = 0;
	queue<int> Q;
	Q.push(w);
	
	while(!Q.empty()) {
		int u=  Q.front();
		Q.pop();
		
		for(int v : G[u]) {
			if(!vis[v]) {
				vis[v] = 1;
				dist[v] = dist[u] + 1;
				Q.push(v);
			}
		}
	}
}

int main() {
	scanf("%d%d%d%d%d%d", &n, &m, &s, &d, &a, &b);
	while(m--) {
		int a, b;
		scanf("%d%d", &a, &b);
		G[a].push_back(b);
		G[b].push_back(a);
	}
	
	run_bfs(s);
	int sa = dist[a], sb = dist[b];
	run_bfs(d);
	int da = dist[a], db = dist[b];
	
	int val = min(da - sa, db - sb);
	if(val < 0) val = 0;
	
	printf("%d\n", val - 1);
	
	return 0;
}

Compilation message

007.cpp: In function 'int main()':
007.cpp:33:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d%d%d%d%d", &n, &m, &s, &d, &a, &b);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
007.cpp:36:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d", &a, &b);
   ~~~~~^~~~~~~~~~~~~~~~

Subtask #1

9.0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Partially correct	9 ms	5248 KB	Partially correct
2	Partially correct	8 ms	5248 KB	Partially correct
3	Partially correct	8 ms	5248 KB	Partially correct
4	Correct	10 ms	5248 KB	Output is correct
5	Correct	8 ms	5248 KB	Output is correct
6	Partially correct	8 ms	5248 KB	Partially correct
7	Partially correct	7 ms	5248 KB	Partially correct
8	Correct	7 ms	5248 KB	Output is correct
9	Partially correct	8 ms	5248 KB	Partially correct
10	Partially correct	8 ms	5248 KB	Partially correct
11	Partially correct	7 ms	5248 KB	Partially correct
12	Correct	7 ms	5248 KB	Output is correct
13	Partially correct	8 ms	5248 KB	Partially correct
14	Correct	7 ms	5248 KB	Output is correct
15	Partially correct	7 ms	5248 KB	Partially correct
16	Correct	7 ms	5248 KB	Output is correct
17	Correct	7 ms	5248 KB	Output is correct
18	Correct	7 ms	5248 KB	Output is correct
19	Partially correct	7 ms	5248 KB	Partially correct
20	Partially correct	8 ms	5248 KB	Partially correct
21	Partially correct	8 ms	5248 KB	Partially correct
22	Partially correct	7 ms	5248 KB	Partially correct
23	Partially correct	7 ms	5248 KB	Partially correct
24	Correct	8 ms	5248 KB	Output is correct

Subtask #2

21.0 / 70.0

#	Verdict	Execution time	Memory	Grader output
1	Partially correct	31 ms	7296 KB	Partially correct
2	Correct	39 ms	7936 KB	Output is correct
3	Partially correct	33 ms	7288 KB	Partially correct
4	Correct	45 ms	8056 KB	Output is correct
5	Partially correct	36 ms	7040 KB	Partially correct
6	Partially correct	33 ms	7296 KB	Partially correct
7	Partially correct	36 ms	7544 KB	Partially correct
8	Partially correct	34 ms	7552 KB	Partially correct
9	Correct	53 ms	8312 KB	Output is correct
10	Partially correct	180 ms	16760 KB	Partially correct
11	Correct	62 ms	9592 KB	Output is correct
12	Partially correct	91 ms	10616 KB	Partially correct
13	Correct	71 ms	9848 KB	Output is correct
14	Correct	60 ms	9080 KB	Output is correct
15	Partially correct	80 ms	10616 KB	Partially correct
16	Partially correct	91 ms	11000 KB	Partially correct
17	Partially correct	70 ms	10360 KB	Partially correct
18	Correct	79 ms	10364 KB	Output is correct
19	Partially correct	112 ms	12792 KB	Partially correct
20	Correct	215 ms	18552 KB	Output is correct
21	Correct	116 ms	12792 KB	Output is correct
22	Partially correct	100 ms	11768 KB	Partially correct
23	Partially correct	106 ms	12664 KB	Partially correct
24	Partially correct	109 ms	12664 KB	Partially correct
25	Correct	122 ms	12280 KB	Output is correct
26	Partially correct	97 ms	11928 KB	Partially correct
27	Partially correct	120 ms	12792 KB	Partially correct
28	Partially correct	213 ms	12920 KB	Partially correct
29	Partially correct	178 ms	14968 KB	Partially correct
30	Correct	263 ms	19448 KB	Output is correct
31	Correct	128 ms	13944 KB	Output is correct
32	Partially correct	137 ms	12792 KB	Partially correct
33	Partially correct	126 ms	13220 KB	Partially correct
34	Correct	149 ms	13432 KB	Output is correct
35	Correct	138 ms	13048 KB	Output is correct
36	Correct	115 ms	13392 KB	Output is correct
37	Partially correct	178 ms	14584 KB	Partially correct
38	Partially correct	187 ms	14328 KB	Partially correct
39	Partially correct	159 ms	14328 KB	Partially correct
40	Correct	248 ms	18144 KB	Output is correct
41	Partially correct	303 ms	23032 KB	Partially correct