Submission #833871

#	Time	Username	Problem	Language	Result	Execution time	Memory
833871		vjudge1	Exam (eJOI20_exam)	C++17	12 / 100	19 ms	4664 KiB

exam

#include<bits/stdc++.h>
using namespace std;
 
#define IOS ios_base::sync_with_stdio(0); cin.tie(0);
#define int long long
#define pb push_back
#define fi first
#define se second
#define mp make_pair
 
const int mod = 1e9 + 7;
const int maxn = 2e6 + 5;
 
int32_t main()
{
    IOS
    int n; cin >> n;
    int h[n + 1], t[n + 1];

    for(int i = 1; i <= n; i++){
        cin >> h[i];
    }
    bool sama = true;
    cin >> t[1];
    for(int i = 2; i <= n; i++){
        cin >> t[i];
        if(t[i] != t[i - 1])sama = false;
    }

    if(sama){
        int tmp = t[1];
        int ada = 0, kurang = 0, lebih = 0;
        vector<int> idx;
        for(int i = 1; i <= n; i++){
            if(h[i] == tmp){
                ada++;
                idx.pb(i);
            }else if(h[i] < tmp){
                kurang++;
            }else{
                lebih++;
            }
        }
        int ans = ada;
        int tanda[n + 1] = {false};
        for(auto i : idx){
            int idx = i - 1;
            if(idx > 0){
                while(h[i] >= h[idx] && idx >= 1){
                    if(tanda[idx] || h[idx] == h[i]){
                        break;
                    }
                    tanda[idx] = 1;
                    ans++;
                    idx--;
                }
            }
            

            idx = i + 1;
            if(idx <= n){
                while(h[i] >= h[idx] && idx <= n){
                    if(tanda[idx] || h[idx] == h[i]){
                        break;
                    }
                    tanda[idx] = 1;
                    ans++;
                    idx++;
                }
            }
            // for(int i = 1; i <= n; i++){
            //     cout << tanda[i] << " ";
            // }cout << endl;
        }

        cout << ans << endl;
        // if(ada == 0){
        //     cout << 0 << endl;
        // }else{
        //     cout << ada + kurang << endl;
        // }
        //cout << kurang << " " << lebih << " " << ada << endl;
    }

}

• Subtask 1: 0 / 14
• Subtask 2: 12 / 12
• Subtask 3: 0 / 13
• Subtask 4: 0 / 23
• Subtask 5: 0 / 16
• Subtask 6: 0 / 22