Submission #197122

#	Time	Username	Problem	Language	Result	Execution time	Memory
197122		dantoh000	Bosses (BOI16_bosses)	C++14	100 / 100	988 ms	760 KiB

bosses

#include <bits/stdc++.h>
using namespace std;
vector<int> adjlist[5005];
int d[5005];
queue<int> q;
int main(){
    int n;
    scanf("%d",&n);
    for (int i = 1; i <= n; i++){
        int k;
        scanf("%d",&k);
        while (k--){
            int x;
            scanf("%d",&x);
            adjlist[x].push_back(i);
        }
    }
    int ans = 1000000000;
    for (int i = 1; i <= n; i++){
        memset(d,-1,sizeof(d));
        d[i] = 0;
        q.push(i);
        while (q.size()){
            int u = q.front(); q.pop();
            for (auto v : adjlist[u]){
                if (d[v] == -1){
                    d[v] = d[u]+1;
                    q.push(v);
                }
            }
        }
        int sum = 0;
        for (int i = 1; i <= n; i++){
            if (d[i] == -1) goto done;
            //printf("%d ",d[i]);
            sum += d[i]+1;
        }
        //printf("\n");
        ans = min(ans,sum);
        done:;
    }
    printf("%d",ans);
}

Compilation message (stderr)

bosses.cpp: In function 'int main()':
bosses.cpp:8:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d",&n);
     ~~~~~^~~~~~~~~
bosses.cpp:11:14: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
         scanf("%d",&k);
         ~~~~~^~~~~~~~~
bosses.cpp:14:18: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
             scanf("%d",&x);
             ~~~~~^~~~~~~~~

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