Submission #722049

#	Time	Username	Problem	Language	Result	Execution time	Memory
722049		PoPularPlusPlus	Brunhilda’s Birthday (BOI13_brunhilda)	C++17	3.33 / 100	264 ms	262144 KiB

brunhilda

#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ull unsigned long long 
#define pb(e) push_back(e)
#define sv(a) sort(a.begin(),a.end())
#define sa(a,n) sort(a,a+n)
#define mp(a,b) make_pair(a,b)
#define vf first
#define vs second
#define ar array
#define all(x) x.begin(),x.end()
const int inf = 0x3f3f3f3f;
const int mod = 1000000007; 
const double PI=3.14159265358979323846264338327950288419716939937510582097494459230;

mt19937_64 RNG(chrono::steady_clock::now().time_since_epoch().count());

bool remender(ll a , ll b){return a%b;}

//freopen("problemname.in", "r", stdin);
//freopen("problemname.out", "w", stdout);

const int N = 10000002;
vector<int> v[N];

void solve(){
	int n , qu;
	cin >> n >> qu;
	int arr[n];
	for(int i = 0; i < n; i++)cin >> arr[i];
	vector<pair<int,int>> queries(qu);
	for(int i = 0; i < qu; i++){
		cin >> queries[i].vf;
		queries[i].vs = i;
	}
	sort(all(queries));
	int mx = 0;
	for(int i = 0; i < n; i++)mx = max(mx , arr[i]);
	for(int i = 0; i < n; i++){
		for(int j = arr[i]; j <= N-2; j+=arr[i]){
			v[j].pb(i);
		}
	}
	int cur[n];
	queue<pair<int,int>> q;
	for(int i = 0; i < n; i++){
		cur[i] = 0;
		q.push(mp(0,i));
	}
	int ans[qu];
	int pointer = 0;
	for(int i = 1; i <= N-2 && pointer < queries.size(); i++){
		for(int j : v[i]){
			cur[j] = -1e9;
		}
		while(q.size()){
			pair<int,int> p = q.front();
			if(cur[p.vs] == p.vf)break;
			q.pop();
		}
		while(pointer < queries.size()){
			if(queries[pointer].vf == i){
				ans[queries[pointer].vs] = (q.size() ? q.front().vf+1 : 1e9);
			}
			else break;
			pointer++;
		}
		int res = 1e9;
		if(q.size())res = q.front().vf+1;
		//cout << res << ' ';
		for(int j : v[i]){
			if(cur[j] == -1e9){
				q.push(mp(res,j));
				cur[j] = res;
			}
		}
	}
	for(int i = 0; i < qu; i++){
		if(ans[i] >= 1e9)cout << "oo\n";
		else cout << ans[i] << '\n';
	}
}

int main(){
ios_base::sync_with_stdio(false);
cin.tie(NULL);
   // int t;cin>>t;
   // while(t--){
		solve();
	//}
	return 0;
}

Compilation message (stderr)

brunhilda.cpp: In function 'void solve()':
brunhilda.cpp:53:37: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   53 |  for(int i = 1; i <= N-2 && pointer < queries.size(); i++){
      |                             ~~~~~~~~^~~~~~~~~~~~~~~~
brunhilda.cpp:62:17: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   62 |   while(pointer < queries.size()){
      |         ~~~~~~~~^~~~~~~~~~~~~~~~

• Subtask 1: 3.3333333333333335 / 20
• Subtask 2: 0 / 20
• Subtask 3: 0 / 60