Submission #206913

#	Time	Username	Problem	Language	Result	Execution time	Memory
206913		MvC	Brunhilda’s Birthday (BOI13_brunhilda)	C++11	100 / 100	389 ms	119544 KiB

brunhilda

#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#include <bits/stdc++.h>
#define rc(x) return cout<<x<<endl,0
#define pb push_back
#define mkp make_pair
#define in insert
#define er erase
#define fd find
#define fr first
#define sc second
typedef long long ll;
typedef long double ld;
const ll INF=0x3f3f3f3f3f3f3f3f;
const ll llinf=(1LL<<62);
const int inf=(1<<30);
const int nmax=1e7+50;
const int mod=1e9+7;
using namespace std;
int n,q,f[nmax],mx[2*nmax],x,i,j;
int main()
{
	//freopen("sol.in","r",stdin);
	//freopen("sol.out","w",stdout);
	//mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
	ios_base::sync_with_stdio(false);cin.tie(0);cerr.tie(0);cout.tie(0);
	cin>>n>>q;
	for(i=1;i<=n;i++)
	{
		cin>>x;
		for(j=0;j<=1e7;j+=x)mx[j+x-1]=max(mx[j+x-1],x-1);
	}
	for(i=2e7;i>=1;i--)mx[i]=max(mx[i],mx[i+1]-1);
	for(i=1;i<=1e7;i++)
	{
		f[i]=inf;
		f[i]=f[i-mx[i]]+1;
	}
	while(q--)
	{
		cin>>x;
		if(f[x]>=inf)cout<<"oo\n";
		else cout<<f[x]<<'\n';
	}
	return 0;
}

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