Submission #332099

#	Time	Username	Problem	Language	Result	Execution time	Memory
332099		iliccmarko	Bosses (BOI16_bosses)	C++14	0 / 100	1 ms	620 KiB

bosses

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define endl "\n"
#define INF 1000000000
#define LINF 1000000000000000LL
#define pb push_back
#define all(x) x.begin(), x.end()
#define len(s) (int)s.size()
#define test_case { int t; cin>>t; while(t--)solve(); }
#define input(n, v) {for(int i = 0;i<n;i++) cin>>v[i];}
#define output(n, v) {for(int i = 0;i<n;i++) cout<<v[i]<<" "; cout<<endl;}
#define single_case solve();
#define line cout<<"------------"<<endl;
#define ios { ios_base::sync_with_stdio(false); cin.tie(NULL); }
using namespace std;
int n;
const int N = 5e3 + 5;
vector<vector<int> > v(N);
vector<vector<int> > g(N);
bitset<N> vidjen;
int dp[N];


int make_graph(int u)
{
    for(int i = 0;i<n;i++)
        vidjen[i] = 0;
    queue<pair<int, int > > q;
    q.push({u, 0});
    for(int i = 0;i<n;i++)
        g[i].clear();
    vidjen[u] = 1;
    int cnt = 0;
    int w = 0;
    while(len(q))
    {
        int top = q.front().first;
        int lvl = q.front().second;
        cnt += 1+lvl;
        q.pop();
        w++;
        for(int x : v[top])
        {
            if(vidjen[x]) continue;
            q.push({x, lvl+1});
            g[top].pb(x);
            vidjen[x] = 1;
        }
    }
    if(w==n) return cnt;
    else return INF;

}

int main()
{
    //ios
    scanf("%d", &n);
    for(int i = 0;i<n;i++)
    {
        int k;
        cin>>k;
        while(k--)
        {
            int a;
            cin>>a;
            a--;
            v[a].pb(i);
        }
    }
    int res;
    int root;
    int mini = INF;
    for(int i = 0;i<n;i++)
    {
        res = min(res, make_graph(i));
    }

    res = make_graph(root);

    printf("%d", res);





    return 0;
}

Compilation message (stderr)

bosses.cpp: In function 'int main()':
bosses.cpp:74:9: warning: unused variable 'mini' [-Wunused-variable]
   74 |     int mini = INF;
      |         ^~~~
bosses.cpp:59:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   59 |     scanf("%d", &n);
      |     ~~~~~^~~~~~~~~~
bosses.cpp:80:21: warning: 'root' may be used uninitialized in this function [-Wmaybe-uninitialized]
   80 |     res = make_graph(root);
      |           ~~~~~~~~~~^~~~~~

• Subtask 1: 0 / 22
• Subtask 2: 0 / 45
• Subtask 3: 0 / 33