oj.uz

Submission #794622

# Submission time Handle Problem Language Result Execution time Memory
794622 2023-07-26T16:56:30 Z vjudge1 Bitaro's travel (JOI23_travel) C++17
0 / 100
 83 ms 2784 KB 
#ifdef Home
#define _GLIBCXX_DEBUG
#endif // Home

#include <bits/stdc++.h>

using namespace std;

typedef long double ld;

const int N = 200200;

int a[N];

main() {
#ifdef Home
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#endif // Home
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    
    int n, q, s, l, r, m, ll, rr, ans, cr;
    cin >> n;
    for(int i = 0; i < n; ++ i) {
        cin >> a[i];
    }
    for(cin >> q; q --> 0;) {
        cin >> s;
        ll = -1, rr = n; // a[l] <= s < a[r];
        for(; ll + 1 < rr;) {
            m = (ll + rr) / 2;
            (s < a[m] ? rr : ll) = m;
        }
        cr = (ll == -1 || (rr < n && a[rr] - s < s - a[ll]) ? rr : ll);
        ans = abs(a[cr] - s);
        for(; ll > -1 && rr < n;) {
            if(a[rr] - a[cr] < a[cr] - a[ll]) {
                l = rr, r = n;
                for(; l + 1 < r;) {
                    m = (l + r) / 2;
                    (a[m] - a[m - 1] < a[m - 1] - a[ll] ? l : r) = m;
                }
                ans += a[l] - a[cr];
                cr = l;
                rr = l + 1;
            } else {
                l = -1, r = ll;
                for(; l + 1 < r;) {
                    m = (l + r) / 2;
                    (a[rr] - a[m + 1] < a[m + 1] - a[m] ? l : r) = m;
                }
                ans += a[cr] - a[r];
                cr = r;
                ll = r - 1;
            }
        }
        if(ll < 0 && rr < n) {
            ans += a[n - 1] - a[cr];
        } else if(rr >= n && ll > -1) {
            ans += a[cr] - a[0];
        } 
        cout << ans << '\n';
    }
}

Compilation message

travel.cpp:15:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   15 | main() {
      | ^~~~

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Incorrect 0 ms 212 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Incorrect 0 ms 212 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 0 ms 212 KB Output is correct
7 Correct 76 ms 2476 KB Output is correct
8 Correct 83 ms 2460 KB Output is correct
9 Correct 82 ms 2412 KB Output is correct
10 Correct 78 ms 2552 KB Output is correct
11 Correct 76 ms 2416 KB Output is correct
12 Correct 77 ms 2396 KB Output is correct
13 Correct 31 ms 2276 KB Output is correct
14 Correct 23 ms 808 KB Output is correct
15 Incorrect 73 ms 2784 KB Output isn't correct
16 Halted 0 ms 0 KB -

Subtask #4
0 / 55.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Incorrect 0 ms 212 KB Output isn't correct
4 Halted 0 ms 0 KB -