Submission #378496

#	Time	Username	Problem	Language	Result	Execution time	Memory
378496		YJU	Brunhilda’s Birthday (BOI13_brunhilda)	C++14	100 / 100	449 ms	189292 KiB

brunhilda

#include<bits/stdc++.h>
#pragma GCC optimize("unroll-loops,no-stack-protector,Ofast")
using namespace std;
typedef long long ll;
typedef pair<ll,ll> pll;
const ll N=12e6+5;
const ll INF=1e9+1;
#define REP(i,n) for(int i=0;i<n;i++)
#define REP1(i,n) for(int i=1;i<=n;i++)
#define X first
#define Y second
#define pb push_back
#define mp make_pair
#define lwb lower_bound

ll m,q,x,jump[N],dp[N];

int main(){
	ios_base::sync_with_stdio(0);cin.tie(0);
	cin>>m>>q;
	REP(i,m){
		cin>>x;
		for(int j=x-1;j<N;j+=x){
			jump[j]=x-1;
		}
	}
	for(int i=N-2;i>=1;i--){
		jump[i]=max(jump[i],jump[i+1]-1);
	}
	for(int i=1;i<N;i++){
		if(jump[i]==0)dp[i]=INF;
		else dp[i]=min(dp[i-jump[i]]+1,INF);
	}
	while(q--){
		cin>>x;
		if(dp[x]>x){
			cout<<"oo\n";
		}else{
			cout<<dp[x]<<"\n";
		}
	}
	return 0;
}

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