Submission #575394

#	Time	Username	Problem	Language	Result	Execution time	Memory
575394		Uzouf	A Difficult(y) Choice (BOI21_books)	C++14	0 / 100	6 ms	688 KiB

books

#include <bits/stdc++.h>
//#include <ext/pb_ds/assoc_container.hpp>
//#include <ext/pb_ds/tree_policy.hpp>
#include"books.h"
using namespace std;
//using namespace __gnu_pbds;
//#define ll long long
//#define endl "\n"
//int mod=1e9+7;
//const int N=2e5+5;
//template<class x>
//using ordered_multiset = tree<x, null_type,less_equal<x>, rb_tree_tag,tree_order_statistics_node_update>;

void solve(int N, int K, long long A, int S) {
  multiset<int> st;
  int v[N];
  map<int,int> mp;
    for (int i=0;i<N;i++) {
      v[i]=skim(i+1);
      st.insert(v[i]);
      mp[v[i]]=i+1;
    }
    int  a=-1,b=-1,c=-1;
    for (int l=0;l<N;l++) {
      for (int r=l+1;r<N;r++) {
        long long need=A-(v[l]+v[r]+1);
        auto mid=st.upper_bound(need);
        if (mid==st.end()) continue;

        if (*mid==v[l]) mid=st.upper_bound(*mid);
        if (mid==st.end()) continue;

        if (*mid==v[r]) mid=st.upper_bound(*mid);
        if (mid==st.end()) continue;

        //cout<<v[l]<<' '<<*mid<<' '<<v[r]<<endl;
        long long chk=*mid+v[l]+v[r];
        if (chk>=A && chk<=2*A) {
          a=l+1; b=mp[*mid]; c=r+1; break;
        }
      }
    }

    if (a==-1) impossible();
    vector<int> ans;
    ans.push_back(a); ans.push_back(b); ans.push_back(c);
    //cout<<a<<' '<<b<<' '<<c;
    answer(ans);
    return;
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 15
• Subtask 3: 0 / 10
• Subtask 4: 0 / 15
• Subtask 5: 0 / 15
• Subtask 6: 0 / 20
• Subtask 7: 0 / 20