Submission #1121574

#	Time	Username	Problem	Language	Result	Execution time	Memory
1121574		vjudge1	Stranded Far From Home (BOI22_island)	C++17	0 / 100	15 ms	3152 KiB

island

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

vector<int>g[22001];
int u[22001];
int a[22001];
int c[22001];
int ans[22001];

int main()
{
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int n,m;
    cin>>n>>m;
    for(int i=1;i<=n;i++){
        cin>>a[i];
    }
    for(int i=1;i<=m;i++){
        int q,w;
        cin>>q>>w;
        g[q].push_back(w);
        g[w].push_back(q);
    }
    //cout<<"\n\n\n";
    for(int iii=1;iii<=n;iii++){
        int p=a[iii];
        for(int i=1;i<=n;i++){
            u[i]=0;
            c[i]=i;
        }
        for(auto it : g[iii]){
            u[it]=1;
        }
        u[iii]=1;
        int k=1;
        vector<int>s;
        s.push_back(iii);
        //cout<<iii<<" "<<p<<"\n";
        while(k<n){
            int j=0;
            int l=0;
            for(auto i : s){
                for(auto it : g[i]){
                    //cout<<it<<" "<<a[it]<<" "<<p<<" "<<c[it]<<"\n";
                    if(c[it]!=iii && a[it]<=p){
                        p+=a[it];
                        s.push_back(it);
                        j++;
                        c[it]=iii;
                        u[it]++;
                        u[i]++;
                    }
                }
            }
            if(j==0){
                break;
            }
            k+=j;
        }
        //cout<<k<<"\n\n";
        if(k==n){
            ans[iii]=1;
        }
    }
    for(int i=1;i<=n;i++){
        cout<<ans[i];
    }
}

Compilation message (stderr)

island.cpp: In function 'int main()':
island.cpp:51:17: warning: unused variable 'l' [-Wunused-variable]
   51 |             int l=0;
      |                 ^

• Subtask 1: 0 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 15
• Subtask 4: 0 / 30
• Subtask 5: 0 / 35