Submission #31881

#	Time	Username	Problem	Language	Result	Execution time	Memory
31881		Kanvie	Brunhilda’s Birthday (BOI13_brunhilda)	C++14	23.65 / 100	426 ms	119204 KiB

brunhilda

#include<bits/stdc++.h>
using namespace std;
const int M=10000000;
int x,m,q,d[M+5],a[M+5],b[M+5],p,pp,cnt;
int main()
{
    cin>>m>>q;
    for(int i=1;i<=m;++i)cin>>a[i];
    for(int i=1;i<=m;++i)
        for(int j=0;j<=M;j+=a[i])d[j]=max(d[j],a[i]);
    for(int i=0;i<=M;++i)
    {
        while(i<=p)
        {
            if(d[i]!=0)pp=max(pp,i+d[i]-1);
            b[i]=cnt;
            if(i==p)break;
            i++;
        }
        if(i==pp)break;
        p=pp;
        ++cnt;
    }
    while(q--)
    {
        cin>>x;
        if(b[x]==0&&x!=0)cout<<"oo\n";
        else cout<<b[x]<<"\n";
    }
}

• Subtask 1: 20 / 20
• Subtask 2: 2.2222222222222223 / 20
• Subtask 3: 1.4285714285714286 / 60