oj.uz

Submission #884359

# Submission time Handle Problem Language Result Execution time Memory
884359 2023-12-07T08:46:29 Z vjudge1 Bosses (BOI16_bosses) C++17
100 / 100
 425 ms 756 KB 
/*
#pragma GCC optimize("fast-math")
#pragma GCC optimize("Ofast,unroll-loops")
#pragma GCC target("avx2")
*/
#include<bits/stdc++.h>
     
using namespace std;
using ll = long long;
using pii = pair<int,int>;
using pll = pair<ll,ll>;
 
#define pb              push_back
#define F               first
#define S               second
#define len(x)          (int)x.size()
#define all(x)          x.begin(),x.end()
#define file            freopen("txt.in", "r", stdin);freopen("txt.out", "w", stdout);
#define kill(x)         {cout << x << '\n'; return 0;}
#define int             long long

const int N = 5e3 + 5, LG = 21, MOD = 1e9+7;// 998244353
const ll inf =  4557430888798830399;

int n, ans, dist[N], cnt;
vector<int> g[N];
queue<int> q;
bitset<N> mark;

signed main() { 
    ios::sync_with_stdio(0), cin.tie(0);
    
    cin >> n;
    for(int i = 1; i <= n; ++i) {
        int sz, v;
        cin >> sz;
        for(int j = 0; j < sz; ++j) {
            cin >> v;
            g[v].pb(i);
        }
    }

    ll ans = inf;
    for(int i = 1; i <= n; ++i) {
        cnt = 1;
        q.push(i);
        dist[i] = 1;
        while(!q.empty()){
            int v = q.front();
            mark[v] = 1;
            q.pop();
            for(int u : g[v])
                if(!mark[u]) {
                    dist[u] = dist[v] + 1;
                    cnt += dist[u];
                    mark[u] = 1;
                    q.push(u);
                }
        }
        if(mark.count() != n) {
            mark.reset();
            continue;
        }
        ans = min(ans, cnt);
        mark.reset();
    }

    cout << ans;
    
    return 0;
}

Compilation message

bosses.cpp: In function 'int main()':
bosses.cpp:60:25: warning: comparison of integer expressions of different signedness: 'std::size_t' {aka 'long unsigned int'} and 'long long int' [-Wsign-compare]
   60 |         if(mark.count() != n) {
      |            ~~~~~~~~~~~~~^~~~

Subtask #1
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct

Subtask #2
45.0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct

Subtask #3
33.0 / 33.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 3 ms 600 KB Output is correct
13 Correct 3 ms 604 KB Output is correct
14 Correct 76 ms 600 KB Output is correct
15 Correct 3 ms 600 KB Output is correct
16 Correct 405 ms 604 KB Output is correct
17 Correct 396 ms 752 KB Output is correct
18 Correct 425 ms 756 KB Output is correct