oj.uz

Submission #890886

# Submission time Handle Problem Language Result Execution time Memory
890886 2023-12-22T04:54:01 Z vjudge1 Bitaro's travel (JOI23_travel) C++17
30 / 100
 109 ms 8528 KB 
#include <bits/stdc++.h>

using namespace std;

#define all(x) x.begin(), x.end()
#define ar array
#define pb push_back
#define ln '\n'
#define int long long

using i64 = long long;

template <class F, class _S>
bool chmin(F &u, const _S &v){
    bool flag = false;
    if ( u > v ){
        u = v; flag |= true;
    }
    return flag;
}

template <class F, class _S>
bool chmax(F &u, const _S &v){
    bool flag = false;
    if ( u < v ){
        u = v; flag |= true;
    }
    return flag;
}

signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    int n; cin >> n;
    vector <int> X(n);
    for ( auto &u: X ) cin >> u;
    int q; cin >> q;
    vector <int> S(q);
    for ( auto &u: S ) cin >> u;
    if ( 0 && q == 1 ){
        int x = S[0];
        const int inf = 1e15;
        set <int> st{-inf, inf};
        for ( int i = 0; i < n; i++ ){
            st.insert(X[i]);
        }
        int ans = 0;
        while ( st.size() > 2 ){
            auto it = st.lower_bound(x);
            assert(*prev(it) <= x && *it >= x);
            if ( abs(*prev(it) - x) <= abs(*it - x) ){
                ans += x - *prev(it);
                x = *prev(it);
                st.erase(prev(it));
            } else{
                ans += -x + *it;
                x = *it;
                st.erase(it);
            }
        }
        cout << ans << ln;
        return 0;
    }
    for ( auto &xx: S ){
        int it = lower_bound(all(X), xx) - X.begin();
        if ( it - 1 >= 0 && (it == n || X[it] - xx >= xx - X[it - 1]) ) --it;
        int ans = abs(X[it] - xx), l = it - 1, r = it + 1, x = X[it];
        while ( l >= 0 || r < n ){
//            cout << l + 1 << " " << r + 1 << " -> " << x << ", " << ans << ln;
            if ( l < 0 ){
                ans += abs(X.back() - x);
                break;
            } else if ( r >= n ){
                ans += abs(X[0] - x);
                break;
            } else{
                if ( abs(X[r] - x) >= 100 && abs(X[l] - x) <= 100 ){
                    ans += abs(X[0] - x);
                    x = X[0]; l = -1;
                    continue;
                }
                if ( abs(X[l] - x) > 100  ){
                    ans += abs(X.back() - x);
                    x = X.back(); r = n;
                    continue;
                }
                if ( abs(X[l] - x) <= abs(X[r] - x) ){
                    ans += abs(X[l] - x);
                    x = X[l--];
                } else{
                    ans += abs(X[r] - x);
                    x = X[r++];
                }
            }
        }
        cout << ans << ln;
    }

    cout << '\n';
}

Subtask #1
0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Incorrect 0 ms 348 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Incorrect 0 ms 348 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 600 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 344 KB Output is correct
7 Correct 88 ms 4792 KB Output is correct
8 Correct 89 ms 4736 KB Output is correct
9 Correct 89 ms 4944 KB Output is correct
10 Correct 89 ms 4944 KB Output is correct
11 Correct 91 ms 5456 KB Output is correct
12 Correct 109 ms 4948 KB Output is correct
13 Correct 30 ms 3924 KB Output is correct
14 Correct 23 ms 2392 KB Output is correct
15 Correct 58 ms 5204 KB Output is correct
16 Correct 58 ms 8528 KB Output is correct
17 Correct 58 ms 8528 KB Output is correct
18 Correct 34 ms 5720 KB Output is correct

Subtask #4
0 / 55.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Incorrect 0 ms 348 KB Output isn't correct
4 Halted 0 ms 0 KB -