Submission #576684

#	Time	Username	Problem	Language	Result	Execution time	Memory
576684		Naser	Exam (eJOI20_exam)	C++17	0 / 100	1 ms	340 KiB

exam

#include <bits/stdc++.h>
#define endl '\n'
#define int long long
#define pii pair<int,int>
#define vint vector<int>
#define se second
#define fi first
#define pb push_back
#define all(x) x.begin(), x.end()
using namespace std; 

int32_t main() {

    ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);


    int t = 1;
     //cin >> t;
    while (t--) {
        int n,b;
        cin >> n;
        vint a(n);
        vint bb(n);
        for (int i = 0;i < n;i++) {
            cin >> a[i];
        }
        cin >> b;
        int cnt = 0; bool x = false;
        for (int i = 0; i < n; i++) {
            if (a[i] == b) {
                x = true;
            }
            cnt++;
        }
        int dis = 0;
        for(int i = 0; i < n; i++){
            if(a[i] > b){
                dis = i + 1;
            }
            if(a[i] == b){
                break;
            }
        }
        int idx = dis, end;
        cnt-=dis; dis = 0;
        for(int i = n - 1; i > 0; i--){
            if(a[i] > b){
                dis = n - i;
                end = i;
            }
            if(a[i] == b){
                break;
            }
        }
        cnt-=dis;
        for(int i = idx; i < end; i++){
            if(a[i] > b){
                cnt--;
            }
        }
        if (x) {
            cout << cnt << endl;
        }
        else {
            cout << 0 << endl;
        }
    }
}

Compilation message (stderr)

exam.cpp: In function 'int32_t main()':
exam.cpp:44:24: warning: 'end' may be used uninitialized in this function [-Wmaybe-uninitialized]
   44 |         int idx = dis, end;
      |                        ^~~

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