oj.uz

Submission #368051

# Submission time Handle Problem Language Result Execution time Memory
368051 2021-02-19T11:53:33 Z urd05 Bosses (BOI16_bosses) C++14
100 / 100
 748 ms 748 KB 
#include <bits/stdc++.h>
using namespace std;

vector<int> adj[5000];
int dist[5000];
 
int main(void) {
    int n;
    scanf("%d",&n);
    for(int i=0;i<n;i++) {
        int k;
        scanf("%d",&k);
        for(int j=0;j<k;j++) {
            int x;
            scanf("%d",&x);
            x--;
            adj[x].push_back(i);
        }
    }
    int ret=1e9;
    for(int r=0;r<n;r++) {
        memset(dist,-1,sizeof(dist));
        int sum=0;
        queue<int> q;
        dist[r]=0;
        q.push(r);
        while (!q.empty()) {
            int now=q.front();
            q.pop();
            for(int i=0;i<adj[now].size();i++) {
                int nt=adj[now][i];
                if (dist[nt]==-1) {
                    dist[nt]=dist[now]+1;
                    q.push(nt);
                }
            }
        }
        for(int i=0;i<n;i++) {
            sum+=dist[i];
            if (dist[i]==-1) {
                sum=1e9;
            }
        }
        ret=min(ret,sum);
    }
    printf("%d",n+ret);
}

Compilation message

bosses.cpp: In function 'int main()':
bosses.cpp:30:26: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   30 |             for(int i=0;i<adj[now].size();i++) {
      |                         ~^~~~~~~~~~~~~~~~
bosses.cpp:9:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
    9 |     scanf("%d",&n);
      |     ~~~~~^~~~~~~~~
bosses.cpp:12:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   12 |         scanf("%d",&k);
      |         ~~~~~^~~~~~~~~
bosses.cpp:15:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   15 |             scanf("%d",&x);
      |             ~~~~~^~~~~~~~~

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 492 KB Output is correct
2 Correct 1 ms 492 KB Output is correct
3 Correct 1 ms 492 KB Output is correct
4 Correct 1 ms 492 KB Output is correct
5 Correct 1 ms 492 KB Output is correct
6 Correct 1 ms 492 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 492 KB Output is correct
2 Correct 1 ms 492 KB Output is correct
3 Correct 1 ms 492 KB Output is correct
4 Correct 1 ms 492 KB Output is correct
5 Correct 1 ms 492 KB Output is correct
6 Correct 1 ms 492 KB Output is correct
7 Correct 1 ms 492 KB Output is correct
8 Correct 1 ms 492 KB Output is correct
9 Correct 1 ms 492 KB Output is correct
10 Correct 1 ms 492 KB Output is correct
11 Correct 1 ms 492 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 492 KB Output is correct
2 Correct 1 ms 492 KB Output is correct
3 Correct 1 ms 492 KB Output is correct
4 Correct 1 ms 492 KB Output is correct
5 Correct 1 ms 492 KB Output is correct
6 Correct 1 ms 492 KB Output is correct
7 Correct 1 ms 492 KB Output is correct
8 Correct 1 ms 492 KB Output is correct
9 Correct 1 ms 492 KB Output is correct
10 Correct 1 ms 492 KB Output is correct
11 Correct 1 ms 492 KB Output is correct
12 Correct 5 ms 492 KB Output is correct
13 Correct 6 ms 492 KB Output is correct
14 Correct 163 ms 588 KB Output is correct
15 Correct 26 ms 512 KB Output is correct
16 Correct 633 ms 748 KB Output is correct
17 Correct 732 ms 748 KB Output is correct
18 Correct 748 ms 680 KB Output is correct