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Submission #253829

# Submission time Handle Problem Language Result Execution time Memory
253829 2020-07-28T19:22:48 Z ChrisT Bosses (BOI16_bosses) C++17
100 / 100
 694 ms 760 KB 
#include<bits/stdc++.h>
using namespace std;
vector<int> canChild[5005];
int dist[5005];
int main () {
	int n;
	scanf ("%d",&n);
	for (int i = 1; i <= n; i++) {
		int k; scanf ("%d",&k);
		while (k--) {
			int a; scanf ("%d",&a); canChild[a].push_back(i);
		}
	}
	int ret = INT_MAX;
	for (int rt = 1; rt <= n; rt++) {
		memset(dist,0x3f,sizeof dist);
		queue<int> q;
		q.push(rt); int sz = 0, ans = 0; dist[rt] = 1;
		while (!q.empty()) {
			int cur = q.front(); q.pop();
			++sz; ans += dist[cur];
			for (int i : canChild[cur]) if (dist[cur] + 1 < dist[i]) {
				dist[i] = dist[cur] + 1;
				q.push(i);
			}
		}
		if (sz == n) ret = min(ret,ans);
	}
	printf ("%d\n",ret);
	return 0;
}

Compilation message

bosses.cpp: In function 'int main()':
bosses.cpp:7:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf ("%d",&n);
  ~~~~~~^~~~~~~~~
bosses.cpp:9:16: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   int k; scanf ("%d",&k);
          ~~~~~~^~~~~~~~~
bosses.cpp:11:17: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    int a; scanf ("%d",&a); canChild[a].push_back(i);
           ~~~~~~^~~~~~~~~

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 512 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 512 KB Output is correct
5 Correct 1 ms 512 KB Output is correct
6 Correct 0 ms 512 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 512 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 512 KB Output is correct
5 Correct 1 ms 512 KB Output is correct
6 Correct 0 ms 512 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 512 KB Output is correct
9 Correct 0 ms 512 KB Output is correct
10 Correct 1 ms 512 KB Output is correct
11 Correct 1 ms 512 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 384 KB Output is correct
2 Correct 0 ms 512 KB Output is correct
3 Correct 1 ms 384 KB Output is correct
4 Correct 0 ms 512 KB Output is correct
5 Correct 1 ms 512 KB Output is correct
6 Correct 0 ms 512 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 1 ms 512 KB Output is correct
9 Correct 0 ms 512 KB Output is correct
10 Correct 1 ms 512 KB Output is correct
11 Correct 1 ms 512 KB Output is correct
12 Correct 6 ms 512 KB Output is correct
13 Correct 5 ms 640 KB Output is correct
14 Correct 125 ms 632 KB Output is correct
15 Correct 7 ms 512 KB Output is correct
16 Correct 542 ms 760 KB Output is correct
17 Correct 686 ms 760 KB Output is correct
18 Correct 694 ms 760 KB Output is correct