oj.uz

Submission #972488

# Submission time Handle Problem Language Result Execution time Memory
972488 2024-04-30T13:39:13 Z vjudge1 Bitaro's travel (JOI23_travel) C++17
15 / 100
 426 ms 43920 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<ll> st;
bool ok = 0;
ll pref[200005], suff[200005];
map<ll, ll> mp;
set<pair<ll, ll>> st1;
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]);
        st1.insert({a[i], i});
        if(i > 1 && a[i] - a[i - 1] > 100) ok = 1;
        mp[a[i]] = i;
    }
    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(pos <= a[1]){
                cout << a[n] - pos << "\n";
                continue;
            }
            if(pos >= a[n]){
                cout << pos - a[1] << "\n";
                continue;
            }
            int pos1 = *st.lower_bound(pos);
            auto it = st.lower_bound(pos);
            it--;
            int pos2 = *it;
            int t = 0;
            bool f = 0;
            swap(pos1, pos2);
            pos1 = mp[pos1];
            pos2 = mp[pos2];
            if(pos - a[pos1] <= a[pos2] - pos){
                sum = pos - a[pos1];
                pos = a[pos1];
                pos1--;
            }
            else{
                sum = a[pos2] - pos;
                pos = a[pos2];
                pos2++;
                f = 1;
            }
            while(pos1 >= 1 && pos2 <= n && a[pos2] - a[pos1] <= 100){
                if(abs(pos - a[pos1]) <= abs(pos - a[pos2])){
                    sum += abs(pos - a[pos1]);
                    pos = a[pos1];
                    pos1--;
                    f = 0;
                }
                else{
                    sum +=  abs(pos - a[pos2]);
                    pos = a[pos2];
                    pos2++;
                    f = 1;
                }
            }
            if(!f){
                if(pos1 > 0) sum += (pos - a[1]);
                if(pos2 != n + 1) sum += (a[n] - a[1]); 
            }
            else{
                if(pos2 <= n) sum += (a[n] - pos);
                if(pos1 > 0) sum += (a[n] - a[1]);
            }
            cout << sum << "\n";
        }
    }
    else{
        for(int i = 1; i <= tt; i++){
            cin >> x[i];
            ll sum = 0, pos = x[i];
            while(!st1.empty()){
                ll x1 = 1e10, y1 = 1e10;
                pair<ll, int> p1, p2;
                if(st1.begin()->first <= pos){
                    auto it = st1.lower_bound({pos, 0});
                    it--;
                    x1 = pos - it->first;
                    p1 = *it;
                }
                if(st1.rbegin()->first > pos){
                    auto it = st1.upper_bound({pos, 0});
                    y1 = it->first - pos;
                    p2 = *it;
                }
                if(x1 <= y1){
                    sum += x1;
                    pos -= x1;
                    st1.erase(p1);
                }   
                else{
                    sum += y1;
                    pos += y1;
                    st1.erase(p2);
                }
            }
            cout << sum << "\n";
        }
    }
}

Compilation message

travel.cpp: In function 'int main()':
travel.cpp:55:21: warning: unused variable 'p1' [-Wunused-variable]
   55 |             ll pos, p1, p2, sum = 0;
      |                     ^~
travel.cpp:55:25: warning: unused variable 'p2' [-Wunused-variable]
   55 |             ll pos, p1, p2, sum = 0;
      |                         ^~
travel.cpp:70:17: warning: unused variable 't' [-Wunused-variable]
   70 |             int t = 0;
      |                 ^

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 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 2 ms 2652 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2516 KB Output is correct
14 Correct 2 ms 2648 KB Output is correct
15 Correct 2 ms 2652 KB Output is correct
16 Correct 2 ms 2652 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 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 2 ms 2652 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2516 KB Output is correct
14 Correct 2 ms 2648 KB Output is correct
15 Correct 2 ms 2652 KB Output is correct
16 Correct 2 ms 2652 KB Output is correct
17 Correct 164 ms 39720 KB Output is correct
18 Correct 180 ms 39744 KB Output is correct
19 Correct 153 ms 39588 KB Output is correct
20 Correct 161 ms 39688 KB Output is correct
21 Correct 185 ms 39764 KB Output is correct
22 Correct 163 ms 40064 KB Output is correct
23 Correct 198 ms 40256 KB Output is correct
24 Correct 178 ms 40048 KB Output is correct
25 Correct 173 ms 40292 KB Output is correct
26 Correct 168 ms 40144 KB Output is correct
27 Correct 182 ms 40292 KB Output is correct
28 Correct 191 ms 40292 KB Output is correct
29 Correct 161 ms 40168 KB Output is correct
30 Correct 222 ms 40056 KB Output is correct
31 Correct 176 ms 40280 KB Output is correct

Subtask #3
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2396 KB Output is correct
2 Correct 1 ms 2656 KB Output is correct
3 Correct 1 ms 2396 KB Output is correct
4 Correct 1 ms 2392 KB Output is correct
5 Correct 1 ms 2396 KB Output is correct
6 Correct 1 ms 2396 KB Output is correct
7 Incorrect 426 ms 43920 KB Output isn't correct
8 Halted 0 ms 0 KB -

Subtask #4
0 / 55.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2392 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 2 ms 2652 KB Output is correct
8 Correct 1 ms 2396 KB Output is correct
9 Correct 1 ms 2396 KB Output is correct
10 Correct 1 ms 2392 KB Output is correct
11 Correct 1 ms 2396 KB Output is correct
12 Correct 1 ms 2396 KB Output is correct
13 Correct 1 ms 2516 KB Output is correct
14 Correct 2 ms 2648 KB Output is correct
15 Correct 2 ms 2652 KB Output is correct
16 Correct 2 ms 2652 KB Output is correct
17 Correct 164 ms 39720 KB Output is correct
18 Correct 180 ms 39744 KB Output is correct
19 Correct 153 ms 39588 KB Output is correct
20 Correct 161 ms 39688 KB Output is correct
21 Correct 185 ms 39764 KB Output is correct
22 Correct 163 ms 40064 KB Output is correct
23 Correct 198 ms 40256 KB Output is correct
24 Correct 178 ms 40048 KB Output is correct
25 Correct 173 ms 40292 KB Output is correct
26 Correct 168 ms 40144 KB Output is correct
27 Correct 182 ms 40292 KB Output is correct
28 Correct 191 ms 40292 KB Output is correct
29 Correct 161 ms 40168 KB Output is correct
30 Correct 222 ms 40056 KB Output is correct
31 Correct 176 ms 40280 KB Output is correct
32 Correct 1 ms 2396 KB Output is correct
33 Correct 1 ms 2656 KB Output is correct
34 Correct 1 ms 2396 KB Output is correct
35 Correct 1 ms 2392 KB Output is correct
36 Correct 1 ms 2396 KB Output is correct
37 Correct 1 ms 2396 KB Output is correct
38 Incorrect 426 ms 43920 KB Output isn't correct
39 Halted 0 ms 0 KB -