oj.uz

Submission #971771

# Submission time Handle Problem Language Result Execution time Memory
971771 2024-04-29T09:17:41 Z vjudge1 Bitaro's travel (JOI23_travel) C++17
15 / 100
 3000 ms 19132 KB 
#include <time.h>
#include <cstdlib>
#include <stack>
#include <numeric>
#include <unordered_map>
#include <unordered_set>
#include <iomanip>
#include <map>
#include <set>
#include <iterator>
#include <deque>
#include <queue>
#include <sstream>
#include <array>
#include <string>
#include <tuple>
#include <chrono>
#include <cassert>
#include <cstdio>
#include <cstring>
#include <list>
#include <iostream>
#include <vector>
#include <cmath>
#include <algorithm>
#include <bitset>
#define ll long long
using namespace std;

int tt = 1, n;
ll a[200005], dist, x[200005];
set<pair<ll, int>> st;
bool ok = 0;
ll pref[200005], suff[200005];
int main(){
    ios::sync_with_stdio(0);
    cin.tie(0), cout.tie(0);
    cin >> n;
    for(int i = 1; i <= n; i++){
        cin >> a[i];
        st.insert({a[i], i});
        if(i > 1 && a[i] - a[i - 1] > 100) ok = 1;
    }
    cin >> tt;
    if(!ok){
        for(int i = 2; i <= n; i++)
            pref[i] = pref[i - 1] + (a[i] - a[i - 1]);
        for(int i = n - 1; i >= 1; i--)
            suff[i] = suff[i + 1] + (a[i + 1] - a[i]);
        while(tt--){
            ll pos, p1, p2, sum = 0;
            cin >> pos;
            deque<pair<ll, int>> d1, d2;
            if(a[1] <= pos){
                auto it = st.upper_bound({pos + 1, 0});
                it--;
                p1 = it->second;
                for(int i = p1; i >= 1; i--)
                    if(abs(pos - a[i]) <= 100) d1.push_front({a[i], i});    
            }
            if(a[n] > pos){
                auto it = st.upper_bound({pos + 1, 0});
                p2 = it->second;
                for(int i = p2; i <= n; i++)
                    if(abs(a[i] - pos) <= 100) d2.push_back({a[i], i});
            }
            if(d1.empty() || d2.empty()){
                if(pos <= a[1]) cout << pref[n] + a[1] - pos << "\n";
                else cout << suff[1] + pos - a[n] << "\n";
                continue;
            }
            int pos1 = d1.front().second, pos2 = d2.back().second;
            while(!d1.empty() && !d2.empty()){
                ll num1 = abs(pos - d1.back().first), num2 = abs(pos - d2.front().first);
                if(num1 <= num2){
                    pos = d1.back().first;
                    d1.pop_back();  
                    sum += num1;
                    continue;
                }
                else{
                    pos = d2.front().first;
                    d2.pop_front();
                    sum += num2;
                    continue;
                }
            }
            if(d1.empty()){
                pos2 = d2.front().second;
                if(pos1 == 0 || abs(pos - a[pos1]) > abs(pos - a[pos2])){
                    sum += abs(pos - a[pos2]);
                    sum += suff[pos2];
                    if(pos1 > 0) sum += pref[n];
                }
                else{
                    sum += pref[pos1];
                    sum += pref[n];
                }
                cout << sum << "\n";
                continue;
            }
            if(d2.empty()){
                pos1 = d1.back().second;
                if(pos2 > n || abs(pos - a[pos1]) <= abs(pos - a[pos2])){
                    sum += abs(pos - a[pos1]);
                    sum += pref[pos1];
                    if(pos2 <= n) sum += pref[n];
                }
                else{
                    sum += suff[pos2];
                    sum += suff[1];
                }
                cout << sum << "\n";
                continue;
            }
        }
        return 0; 
    }
    for(int i = 1; i <= tt; i++){
        cin >> x[i];
        ll sum = 0, pos = x[i];
        while(!st.empty()){
            ll x1 = 1e10, y1 = 1e10;
            pair<ll, int> p1, p2;
            if(st.begin()->first <= pos){
                auto it = st.lower_bound({pos, 0});
                it--;
                x1 = pos - it->first;
                p1 = *it;
            }
            if(st.rbegin()->first > pos){
                auto it = st.upper_bound({pos, 0});
                y1 = it->first - pos;
                p2 = *it;
            }
            if(x1 <= y1){
                sum += x1;
                pos -= x1;
                st.erase(p1);
            }   
            else{
                sum += y1;
                pos += y1;
                st.erase(p2);
            }
        }
        cout << sum << "\n";
    }
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2652 KB Output is correct
3 Correct 1 ms 2652 KB Output is correct
4 Correct 2 ms 2652 KB Output is correct
5 Correct 1 ms 2652 KB Output is correct
6 Correct 2 ms 2652 KB Output is correct
7 Correct 1 ms 2652 KB Output is correct
8 Correct 1 ms 2648 KB Output is correct
9 Correct 0 ms 2396 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2648 KB Output is correct
15 Correct 1 ms 2652 KB Output is correct
16 Correct 1 ms 2652 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2652 KB Output is correct
3 Correct 1 ms 2652 KB Output is correct
4 Correct 2 ms 2652 KB Output is correct
5 Correct 1 ms 2652 KB Output is correct
6 Correct 2 ms 2652 KB Output is correct
7 Correct 1 ms 2652 KB Output is correct
8 Correct 1 ms 2648 KB Output is correct
9 Correct 0 ms 2396 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2648 KB Output is correct
15 Correct 1 ms 2652 KB Output is correct
16 Correct 1 ms 2652 KB Output is correct
17 Correct 72 ms 16520 KB Output is correct
18 Correct 86 ms 16580 KB Output is correct
19 Correct 82 ms 16492 KB Output is correct
20 Correct 75 ms 16464 KB Output is correct
21 Correct 74 ms 16832 KB Output is correct
22 Correct 88 ms 16340 KB Output is correct
23 Correct 72 ms 16476 KB Output is correct
24 Correct 75 ms 16508 KB Output is correct
25 Correct 80 ms 16468 KB Output is correct
26 Correct 91 ms 16524 KB Output is correct
27 Correct 96 ms 16668 KB Output is correct
28 Correct 78 ms 16520 KB Output is correct
29 Correct 74 ms 16552 KB Output is correct
30 Correct 77 ms 16584 KB Output is correct
31 Correct 75 ms 16464 KB Output is correct

Subtask #3
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 2392 KB Output is correct
2 Correct 0 ms 2396 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 0 ms 2396 KB Output is correct
5 Correct 2 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Execution timed out 3084 ms 19132 KB Time limit exceeded
8 Halted 0 ms 0 KB -

Subtask #4
0 / 55.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2652 KB Output is correct
3 Correct 1 ms 2652 KB Output is correct
4 Correct 2 ms 2652 KB Output is correct
5 Correct 1 ms 2652 KB Output is correct
6 Correct 2 ms 2652 KB Output is correct
7 Correct 1 ms 2652 KB Output is correct
8 Correct 1 ms 2648 KB Output is correct
9 Correct 0 ms 2396 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 0 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2396 KB Output is correct
14 Correct 1 ms 2648 KB Output is correct
15 Correct 1 ms 2652 KB Output is correct
16 Correct 1 ms 2652 KB Output is correct
17 Correct 72 ms 16520 KB Output is correct
18 Correct 86 ms 16580 KB Output is correct
19 Correct 82 ms 16492 KB Output is correct
20 Correct 75 ms 16464 KB Output is correct
21 Correct 74 ms 16832 KB Output is correct
22 Correct 88 ms 16340 KB Output is correct
23 Correct 72 ms 16476 KB Output is correct
24 Correct 75 ms 16508 KB Output is correct
25 Correct 80 ms 16468 KB Output is correct
26 Correct 91 ms 16524 KB Output is correct
27 Correct 96 ms 16668 KB Output is correct
28 Correct 78 ms 16520 KB Output is correct
29 Correct 74 ms 16552 KB Output is correct
30 Correct 77 ms 16584 KB Output is correct
31 Correct 75 ms 16464 KB Output is correct
32 Correct 0 ms 2392 KB Output is correct
33 Correct 0 ms 2396 KB Output is correct
34 Correct 1 ms 2396 KB Output is correct
35 Correct 0 ms 2396 KB Output is correct
36 Correct 2 ms 2396 KB Output is correct
37 Correct 1 ms 2396 KB Output is correct
38 Execution timed out 3084 ms 19132 KB Time limit exceeded
39 Halted 0 ms 0 KB -