Submission #597113

#	Time	Username	Problem	Language	Result	Execution time	Memory
597113		yutabi	모임들 (IOI18_meetings)	C++14	19 / 100	5590 ms	7008 KiB

meetings

#include "meetings.h"


#include <bits/stdc++.h>
using namespace std;


#define pb push_back


typedef long long ll;
typedef pair <ll,ll> ii;


std::vector<long long> minimum_costs(std::vector<int> H, std::vector<int> L, std::vector<int> R)
{
    vector <ll> ans;

    for(int i=0;i<L.size();i++)
    {
        vector <ll> Ll(1,0);
        vector <ll> Rr(1,0);

        ll curr_ans=0;
        
        vector <ii> aaaa;

        for(int j=L[i];j<=R[i];j++)
        {
            ll curr_num=1;
            ll curr_height=H[j];

            while(aaaa.size() && curr_height>aaaa.back().first)
            {
                curr_ans-=aaaa.back().first*aaaa.back().second;

                curr_num+=aaaa.back().second;

                aaaa.pop_back();
            }

            curr_ans+=curr_num*curr_height;

            aaaa.pb(ii(curr_height,curr_num));

            Ll.pb(curr_ans);
        }

        aaaa.clear();

        curr_ans=0;

        for(int j=R[i];j>=L[i];j--)
        {
            ll curr_num=1;
            ll curr_height=H[j];

            while(aaaa.size() && curr_height>aaaa.back().first)
            {
                curr_ans-=aaaa.back().first*aaaa.back().second;

                curr_num+=aaaa.back().second;

                aaaa.pop_back();
            }

            curr_ans+=curr_num*curr_height;

            aaaa.pb(ii(curr_height,curr_num));

            Rr.pb(curr_ans);
        }

        ll nw_ans=-1;

        for(int j=0;j<Rr.size();j++)
        {
            if(nw_ans==-1 || Ll[j]+Rr[Rr.size()-j-1]<nw_ans)
            {
                nw_ans=Ll[j]+Rr[Rr.size()-j-1];
            }
        }

        ans.pb(nw_ans);
    }



    return ans;
}

Compilation message (stderr)

meetings.cpp: In function 'std::vector<long long int> minimum_costs(std::vector<int>, std::vector<int>, std::vector<int>)':
meetings.cpp:19:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   19 |     for(int i=0;i<L.size();i++)
      |                 ~^~~~~~~~~
meetings.cpp:76:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   76 |         for(int j=0;j<Rr.size();j++)
      |                     ~^~~~~~~~~~

• Subtask 1: 4 / 4
• Subtask 2: 15 / 15
• Subtask 3: 0 / 17
• Subtask 4: 0 / 24
• Subtask 5: 0 / 40