oj.uz

Submission #208532

# Submission time Handle Problem Language Result Execution time Memory
208532 2020-03-11T13:15:38 Z jzh Bosses (BOI16_bosses) C++14
67 / 100
 1500 ms 860 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
vector<ll>v[5010];
ll level[5010];
bool vis[5010];
ll sum;
ll dfs(ll node){
    //if (vis[node])return 0;
    vis[node]=1;
    ll ret=0;
    for (ll i=0;i<v[node].size();i++){
        if (level[v[node][i]]==level[node]+1&&!vis[v[node][i]]){
            ret+=dfs(v[node][i]);
        }
    }
    ret++;
    sum+=ret;
    //cout<<node<<' '<<ret<<'\n';
    return ret;
}
int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    ll n,i,x,y,k,ans=INT_MAX,i1,w,cnt;
    cin>>n;
    
    for (i=1;i<=n;i++){
        cin>>k;
        while (k--){
            cin>>x;
            v[x].push_back(i);
        }
    }
    for (i=1;i<=n;i++){
        queue<pair<ll,ll> >q;
        q.push({1,i});
        for (i1=1;i1<=n;i1++)level[i1]=-1,vis[i1]=0;
        level[i]=1;
        sum=0;
        cnt=0;
        while (!q.empty()){
            x=q.front().second;
            w=q.front().first;
            q.pop();
            cnt++;
            for (i1=0;i1<v[x].size();i1++){
                if (level[v[x][i1]]==-1){
                    level[v[x][i1]]=w+1;
                    q.push({w+1,v[x][i1]});
                    //cout<<x<<'.'<<v[x][i1]<<'\n';
                }
            }
        }
        if (cnt<n){
            continue;
        }
        dfs(i);
        ans=min(ans,sum);
        //cout<<i<<'\n';
        //cout<<sum<<'\n';
    }
    cout<<ans<<'\n';
}

Compilation message

bosses.cpp: In function 'll dfs(ll)':
bosses.cpp:12:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for (ll i=0;i<v[node].size();i++){
                 ~^~~~~~~~~~~~~~~
bosses.cpp: In function 'int main()':
bosses.cpp:47:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
             for (i1=0;i1<v[x].size();i1++){
                       ~~^~~~~~~~~~~~
bosses.cpp:25:14: warning: unused variable 'y' [-Wunused-variable]
     ll n,i,x,y,k,ans=INT_MAX,i1,w,cnt;
              ^

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 504 KB Output is correct
2 Correct 5 ms 504 KB Output is correct
3 Correct 5 ms 504 KB Output is correct
4 Correct 5 ms 504 KB Output is correct
5 Correct 5 ms 504 KB Output is correct
6 Correct 5 ms 504 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 504 KB Output is correct
2 Correct 5 ms 504 KB Output is correct
3 Correct 5 ms 504 KB Output is correct
4 Correct 5 ms 504 KB Output is correct
5 Correct 5 ms 504 KB Output is correct
6 Correct 5 ms 504 KB Output is correct
7 Correct 5 ms 504 KB Output is correct
8 Correct 5 ms 504 KB Output is correct
9 Correct 5 ms 504 KB Output is correct
10 Correct 5 ms 504 KB Output is correct
11 Correct 5 ms 504 KB Output is correct

Subtask #3
0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 5 ms 504 KB Output is correct
2 Correct 5 ms 504 KB Output is correct
3 Correct 5 ms 504 KB Output is correct
4 Correct 5 ms 504 KB Output is correct
5 Correct 5 ms 504 KB Output is correct
6 Correct 5 ms 504 KB Output is correct
7 Correct 5 ms 504 KB Output is correct
8 Correct 5 ms 504 KB Output is correct
9 Correct 5 ms 504 KB Output is correct
10 Correct 5 ms 504 KB Output is correct
11 Correct 5 ms 504 KB Output is correct
12 Correct 16 ms 504 KB Output is correct
13 Correct 15 ms 632 KB Output is correct
14 Correct 255 ms 632 KB Output is correct
15 Correct 49 ms 632 KB Output is correct
16 Correct 847 ms 860 KB Output is correct
17 Execution timed out 1589 ms 632 KB Time limit exceeded
18 Halted 0 ms 0 KB -