Submission #346035

#	Time	Username	Problem	Language	Result	Execution time	Memory
346035		Pichon5	Birmingham (COCI20_birmingham)	C++17	70 / 70	211 ms	11240 KiB

birmingham

#include<bits/stdc++.h>
#define lcm(a,b) (a/__gcd(a,b))*b
#define fast ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
#define ll long long int
#define vi vector<int>
#define vll vector<ll>
#define pb push_back
#define F first
#define S second
#define mp make_pair
//salida rapida "\n"
//DECIMALES fixed<<sp(n)<<x<<endl;
//gcd(a,b)= ax + by
//lCB x&-x
//set.erase(it) - ersases the element present at the required index//auto it = s.find(element)
//set.find(element) - iterator pointing to the given element if it is present else return pointer pointing to set.end()
//set.lower_bound(element) - iterator pointing to element greater than or equal to the given element
//set.upper_bound(element) - iterator pointing to element greater than the given element
// | ^
//stoll string to long long
using namespace std;
int n,m,q,k,x,a,b;
vector<vi>G;
int main()
{
    cin>>n>>m>>q>>k;
    queue<int>Q;
    vi dis(n+1,-1);
    while(q--){
        cin>>x;
        Q.push(x);
        dis[x]=0;
    }
    G.assign(n+1,vi());
    for(int i=0;i<m;i++){
        cin>>a>>b;
        G[a].pb(b);
        G[b].pb(a);
    }
    while(!Q.empty()){
        int u = Q.front();
        Q.pop();
        for(auto it : G[u]){
            if(dis[it]!=-1){
                continue;
            }
            dis[it]=dis[u]+1;
            Q.push(it);
        }
    }
    vll aux;
    ll K=k;
    aux.pb(k);
    for(int i=2;i<=n;i++){
        K+=k*i;
        aux.pb(K);
    }
    /*for(int i=1;i<=n;i++){
        cout<<dis[i]<<" . ";
    }*/
    for(int i=1;i<=n;i++){
        if(dis[i]==0){
            cout<<0<<" ";
            continue;
        }
        int b=0,e=n-1,res;
        while(b<=e){
            int mid=(b+e)/2;
            if(aux[mid]>=dis[i]){
                res=mid+1;
                e=mid-1;
            }else{
                b=mid+1;
            }
        }
        cout<<res<<" ";
    }

    
    return 0;
}

Compilation message (stderr)

birmingham.cpp: In function 'int main()':
birmingham.cpp:76:20: warning: 'res' may be used uninitialized in this function [-Wmaybe-uninitialized]
   76 |         cout<<res<<" ";
      |                    ^~~

• 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