Submission #238449

#	Time	Username	Problem	Language	Result	Execution time	Memory
238449		vankata	Birmingham (COCI20_birmingham)	C++14	70 / 70	250 ms	12040 KiB

birmingham

#include<bits/stdc++.h>
using namespace std;
const int  MAXN = (int )(1<<17);
vector<long long >v[MAXN];
vector <long long > rig;
long long  n,m,q,k,used[MAXN];
void BFS()
{
    long long  i,j;
    queue<long long >q;
    for(auto nb:rig)
    {
        used[nb]=true;
        q.push(nb);
    }
    while(!q.empty())
    {
        i=q.front();
        q.pop();
        for(auto nb:v[i])
        {
            if(!used[nb])
            {
                used[nb]=used[i]+1;
                q.push(nb);
            }
        }
    }
}
void read()
{
    long long  i,j,x,y;
    cin>>n>>m>>q>>k;
    for(i=0;i<q;i++)
    {
        cin>>x;
        rig.push_back(x);
    }
    for(i=0;i<m;i++)
    {
        cin>>x>>y;
        v[x].push_back(y);
        v[y].push_back(x);
    }
}
void solve()
{
    long long  i,ans=0;
    for(i=1;i<=n;i++)
    {
        used[i]--;
        ans= used[i]/k;
        if(used[i]%k)ans++;
        ans*=2;
        used[i]=sqrt(ans);
        if(used[i]*(used[i]+1)<ans)used[i]++;
        cout<<used[i]<<" ";
    }cout<<endl;
}
int main()
{
    read();
    BFS();
    solve();
    return 0;
}

Compilation message (stderr)

birmingham.cpp: In function 'void BFS()':
birmingham.cpp:9:18: warning: unused variable 'j' [-Wunused-variable]
     long long  i,j;
                  ^
birmingham.cpp: In function 'void read()':
birmingham.cpp:32:18: warning: unused variable 'j' [-Wunused-variable]
     long long  i,j,x,y;
                  ^

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 5 / 5
• Subtask 4: 5 / 5
• Subtask 5: 5 / 5
• Subtask 6: 5 / 5
• Subtask 7: 5 / 5
• Subtask 8: 5 / 5
• Subtask 9: 5 / 5
• Subtask 10: 5 / 5
• Subtask 11: 5 / 5
• Subtask 12: 5 / 5
• Subtask 13: 5 / 5
• Subtask 14: 5 / 5