Submission #896129

#	Time	Username	Problem	Language	Result	Execution time	Memory
896129		Andrey	Bosses (BOI16_bosses)	C++14	100 / 100	429 ms	796 KiB

bosses

#include <bits/stdc++.h>
using namespace std;

vector<int> haha[5001];

int n;

int calc(int s) {
    vector<int> ans(n+1,INT_MAX);
    ans[s] = 0;
    queue<int> idk;
    idk.push(s);
    while(!idk.empty()) {
        int a = idk.front();
        idk.pop();
        for(int v: haha[a]) {
            if(ans[v] > ans[a]+1) {
                ans[v] = ans[a]+1;
                idk.push(v);
            }
        }
    }
    int sb = 0;
    for(int i = 1; i <= n; i++) {
        if(ans[i] == INT_MAX) {
            return INT_MAX;
        }
        sb+=ans[i]+1;
    }
    return sb;
}

int main()
{
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    cin >> n;
    int k,a;
    for(int i = 1; i <= n; i++) {
        cin >> k;
        for(int j = 0; j < k; j++) {
            cin >> a;
            haha[a].push_back(i);
        }
    }
    int ans = INT_MAX;
    for(int i = 1; i <= n; i++) {
        ans = min(ans,calc(i));
    }
    cout << ans;
    return 0;
}

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