제출 #292431

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
292431		zoooma13	모임들 (IOI18_meetings)	C++14	0 / 100	21 ms	2560 KiB

meetings

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

vector<long long> minimum_costs(vector<int> H, vector<int> L, vector<int> R){
    assert(H.size() <= 5000);
    vector <long long> dpL(H.size()) ,dpR(H.size()) ,ans(L.size() ,LLONG_MAX);
    for(int q = 0; q < L.size(); q++){
        int l = L[q] ,r = R[q];
        long long cur = 0;

        vector <int> mq{l-1};
        for(int i=l; i<=r; i++){
            while(mq.size()>1 && H[mq.back()] <= H[i]){
                cur -= (mq.back()-mq[(int)mq.size()-2])*H[mq.back()];
                mq.pop_back();
            }
            mq.push_back(i);
            cur += (mq.back()-mq[(int)mq.size()-2])*H[mq.back()];
            dpL[i] = cur;
        }
        mq = {r+1} ,cur = 0;
        for(int i=r; i>=l; i--){
            while(mq.size()>1 && H[mq.back()] <= H[i]){
                cur -= (mq[(int)mq.size()-2]-mq.back())*H[mq.back()];
                mq.pop_back();
            }
            mq.push_back(i);
            cur += (mq[(int)mq.size()-2]-mq.back())*H[mq.back()];
            dpR[i] = cur;
        }

        for(int i=l; i<=r; i++)
            ans[q] = min(ans[q] ,dpL[i]+dpR[i]-H[i]);
    }
    return ans;
}

컴파일 시 표준 에러 (stderr) 메시지

meetings.cpp: In function 'std::vector<long long int> minimum_costs(std::vector<int>, std::vector<int>, std::vector<int>)':
meetings.cpp:8:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
    8 |     for(int q = 0; q < L.size(); q++){
      |                    ~~^~~~~~~~~~

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• Subtask 4: 0 / 24
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