Submission #732291

#	Time	Username	Problem	Language	Result	Execution time	Memory
732291		n0sk1ll	Brunhilda’s Birthday (BOI13_brunhilda)	C++17	100 / 100	246 ms	80636 KiB

brunhilda

#include <bits/stdc++.h>

#define FAST ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);cerr.tie(0)
#define mp make_pair
#define xx first
#define yy second
#define pb push_back
#define pf push_front
#define popb pop_back
#define popf pop_front
#define all(x) x.begin(),x.end()
#define ff(i,a,b) for (int i = a; i < b; i++)
#define fff(i,a,b) for (int i = a; i <= b; i++)
#define bff(i,a,b) for (int i = b-1; i >= a; i--)
#define bfff(i,a,b) for (int i = b; i >= a; i--)

using namespace std;
long double typedef ld;
unsigned int typedef ui;
long long int typedef li;
pair<int,int> typedef pii;
pair<li,li> typedef pli;
pair<ld,ld> typedef pld;
vector<vector<int>> typedef graph;
unsigned long long int typedef ull;
//const int mod = 998244353;
const int mod = 1000000007;







//Note to self: Check for overflow

const int N=10'000'000;
int dp[N+7];

int lud[N+7]; //largest divisor

int main()
{
    FAST;

    int m,q; cin>>m>>q;
    vector<int> prost(m);
    ff(i,0,m) cin>>prost[i];

    fff(i,1,N) dp[i]=mod;

    for (auto p : prost)
    {
        for (int i=0;i<=N/p;i++) lud[i*p]=p;
    }

    int dokle0=-1,dokle1=-1,okle=0;
    fff(i,0,N)
    {
        if (i)
        {
            if (dokle0>=i) dp[i]=dp[i-1];
            else
            {
                if (dokle1>=i) dp[i]=dp[i-1]+1;
                {
                    dokle0=dokle1,dokle1=-1;
                }
            }
        }

        dokle1=max(dokle1,i+lud[i]-1);
    }

    //fff(i,0,10) cout<<i<<": "<<dp[i]<<endl;

    while (q--)
    {
        int nj; cin>>nj;
        if (dp[nj]>N+3) cout<<"oo\n";
        else cout<<dp[nj]<<"\n";
    }
}

//Note to self: Check for overflow

Compilation message (stderr)

brunhilda.cpp: In function 'int main()':
brunhilda.cpp:57:29: warning: unused variable 'okle' [-Wunused-variable]
   57 |     int dokle0=-1,dokle1=-1,okle=0;
      |                             ^~~~

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