Submission #846043

#	Time	Username	Problem	Language	Result	Execution time	Memory
846043		vjudge1	Birmingham (COCI20_birmingham)	C++11	Compilation error	0 ms	0 KiB

birmingham

#include <bits/stdc++.h>
#define lg(a) (31 - __builtin_clz((a)))
#define endl ("\n")
#define pb push_back
#define mp make_pair
#define lb lower_bound
#define ub upper_bound
#define vi vector<int>
#define st first
#define nd second
#define all(aa) aa.begin(), aa.end()
#define rall(aa) aa.rbegin(), aa.rend()
#define until(n, v) (int) (lower_bound(v.begin(), v.end(), n)-v.begin()) //# of elements < n
#define after(n, v) (int) (v.end()-upper_bound(v.begin(), v.end(), n))   //# of elements > n
#define sameas(n, v) (int) (upper_bound(v.begin(), v.end(), n) - lower_bound(v.begin(), v.end(), n)) //# of elements ==n
typedef long long ll;
const ll MOD = 1e9+7;
using namespace std;
/*

*/




void solve(){
    int n, m, k, qq; 
    cin >> n >> m >> qq >> k;

    queue<int> q;
    for(int i=0; i<qq; i++){
        int a; cin >> a;
        a--;
        q.push(a);
        ans[a] = 0;
    }

    vector<vector<int>> g;
    for(int i=0; i < m; i++){
        int a, b; cin >> a >> b;
        a--, b--;
        g[a].pb(b);
        g[b].pb(a);
    }

    vector<int> ans(n, -1);
    while(!q.empty()){
        int v = q.front();
        q.pop();

        for(auto u : g[v]){
            if(ans[u]==-1){
                ans[u] = ans[v] + 1;
                q.push(u);
            }
        }
    }

    for(int i=0;i<n;i++){
        int l = 0, r= n;

        while(l<r){
            int mid = (l+r)/2;
            if(1ll*mid*(mid+1)*k/2 < ans[i])
                l = mid+1;

            else if(1ll*mid*(mid+1)*k/2 >= ans[i])
                r = mid;
        }
        cout<<r<<' ';
    }
}

int main(){
	int test; 
    // cin >> test;
    test =1;
   	while (test--){
		solve();
    }
}

Compilation message (stderr)

birmingham.cpp: In function 'void solve()':
birmingham.cpp:35:9: error: 'ans' was not declared in this scope; did you mean 'abs'?
   35 |         ans[a] = 0;
      |         ^~~
      |         abs