Submission #1109623

#	Time	Username	Problem	Language	Result	Execution time	Memory
1109623		0pt1mus23	Brunhilda’s Birthday (BOI13_brunhilda)	C++17	48.89 / 100	1082 ms	81088 KiB

brunhilda

#pragma GCC optimization ("O3")
#pragma GCC optimization ("unroll-loops")
#pragma GCC optimization ("inline")
#include <bits/stdc++.h>
using namespace std;
#define int long long int
#define ins insert      
#define pb push_back
#define endl '\n'
#define putr(x) cout<<x<<endl;return; 
#define all(x) x.begin(),x.end()
int nxt(){ int x;cin>>x; return x; }
const int mod = 1e9 +7, sze = 1e7 +10, inf = INT_MAX, LG = 20;
int dp[sze];
void fast(){
    int n,q;
    cin>>n>>q;
    map<int,int> ans;
    int mx = 0;
    priority_queue<pair<int,int>> ev;
    for(int i=1;i<=n;i++){
        int p;cin>>p;
        // event[p].pb(p);
        ev.push({-p,p});
        mx=max(mx,p);
    }
    vector<int> primus;
    int c,prev;
    for(int i =1;i<sze;i++){
        dp[i]=inf;
        primus.clear();
        c=0;
        while(!ev.empty() && (-(ev.top().first )) ==i ) {
            auto beg = ev.top();
            ev.pop();
            c++;
            // cout<<i<<" "<<beg.first<<" "<<beg.second<<endl;
            if( (i + beg.second) < sze){
                ev.push({ -(i + beg.second) , beg.second });
            }
            prev=  dp[i - beg.second];
            if(i != beg.second){
                if(ans.find(prev)!=ans.end()){
                    if( (--ans[prev]) ==0){
                        ans.erase(prev);
                    }
                }
            }
        }
        if( i < mx ){
            dp[i]=1;
        }
        else if(!ans.empty()){
            dp[i]= (*ans.begin()).first+1;
        }
        if(dp[i]<inf){
            ans[dp[i]]+=c;
        }
    }
 
 
    while(q--){
        int v;
        cin>>v;
        if(dp[v]>=inf){
            cout<<"oo"<<endl;
        }
        else{
            cout<<dp[v]<<endl;
        }
    }
}
 
signed main(){
    ios::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
 
    int tt = 1; 
    // cin>>tt;
 
    while(tt--){
        fast();
    }
 
    return 0;
}

Compilation message (stderr)

brunhilda.cpp:1: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    1 | #pragma GCC optimization ("O3")
      | 
brunhilda.cpp:2: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    2 | #pragma GCC optimization ("unroll-loops")
      | 
brunhilda.cpp:3: warning: ignoring '#pragma GCC optimization' [-Wunknown-pragmas]
    3 | #pragma GCC optimization ("inline")
      |

• Subtask 1: 17.77777777777778 / 20
• Subtask 2: 11.11111111111111 / 20
• Subtask 3: 20 / 60