oj.uz

답안 #807424

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
807424 2023-08-04T17:12:20 Z oscar1f 3단 점프 (JOI19_jumps) C++17
0 / 100
 22 ms 7212 KB 
#include<bits/stdc++.h>
using namespace std;

#define int long long

const int MAX_VAL=500*1000+5,INFINI=1000*1000*1000;
int nbVal,nbReq,debReq,finReq,rep;
int val[MAX_VAL];
int maxi[MAX_VAL];
vector<int> enCours;
vector<pair<int,int>> paireInter;

signed main() {
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cout.tie(NULL);
    cin>>nbVal;
    for (int i=1;i<=nbVal;i++) {
        cin>>val[i];
    }
    enCours.push_back(1);
    for (int i=2;i<=nbVal;i++) {
        while (!enCours.empty() and val[enCours.back()]<=val[i]) {
            if (nbVal-i>=i-enCours.back()) {
                paireInter.push_back({enCours.back(),i});
            }
            enCours.pop_back();
        } 
        if (!enCours.empty()) {
            if (nbVal-i>=i-enCours.back()) {
                paireInter.push_back({enCours.back(),i});
            }
            enCours.pop_back();
        }
        enCours.push_back(i);
    }
    cin>>nbReq;
    for (int ireq=1;ireq<=nbReq;ireq++) {
        cin>>debReq>>finReq;
        for (int i=finReq+1;i<=nbVal+1;i++) {
            maxi[i]=-INFINI;
        }
        for (int i=finReq;i>=debReq;i--) {
            maxi[i]=max(maxi[i+1],val[i]);
        }
        rep=0;
        for (auto i:paireInter) {
            if (i.first>=debReq) {
                rep=max(rep,val[i.first]+val[i.second]+maxi[2*i.second-i.first]);
            }
        }
        cout<<rep<<"\n";
    }
}

Subtask #1
0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 1 ms 340 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #2
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 1 ms 340 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #3
0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 22 ms 7212 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 54.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 212 KB Output is correct
2 Incorrect 1 ms 340 KB Output isn't correct
3 Halted 0 ms 0 KB -