oj.uz

Submission #780655

# Submission time Handle Problem Language Result Execution time Memory
780655 2023-07-12T11:28:34 Z Cookie Bitaro's travel (JOI23_travel) C++14
100 / 100
 523 ms 64320 KB 
#include<bits/stdc++.h>
#include<fstream>
using namespace std;
ifstream fin("VNOICUP.INP");
ofstream fout("VNOICUP.OUT");
#define sz(a) (int)a.size()
#define ll long long
#define pb push_back
#define forr(i, a, b) for(int i = a; i < b; i++)
#define dorr(i, a, b) for(int i = a; i >= b; i--)
#define ld long double
#define vt vector
#include<fstream>
#define fi first
#define se second
#define pll pair<ll, ll>
#define pii pair<int, int>
const ld PI = 3.14159265359;
using u128 = __uint128_t;
//const int x[4] = {1, -1, 0, 0};
//const int y[4] = {0, 0, 1, -1};
const ll mod = 998244353;
const int mxn = 2e5 + 5, mxq = 2e5 + 5, sq = 400, mxv = 2e7 + 5;
//const int base = (1 << 18);
const ll inf = 2e9 + 5, neg = -69420;
int n;
ll x[mxn + 1], mx[mxn + 1][18], mn[mxn + 1][18];
ll getmn(int l, int r){
    int lg = __lg(r - l + 1);
    return(min(mn[l][lg], mn[r - (1 << lg) + 1][lg]));
}
ll getmx(int l, int r){
    int lg = __lg(r - l + 1);
    return(max(mx[l][lg], mx[r - (1 << lg) + 1][lg]));
}
void solve(ll s){
    int id = lower_bound(x, x + n + 1, s) - x;
    ll res, l, r;
    if(abs(x[id - 1] - s) <= abs(x[id] - s)){
        res = abs(x[id - 1] - s); l = r = id - 1;
    }else{
        l = r = id; res = x[id] - s;
    }
    bool turn = 1;
    while(l > 1 || r < n){
        if(turn){
            // go left
            int le = 1, ri = l - 1, ans = l;
            while(le <= ri){
                int mid = (le + ri) >> 1;
                if(getmx(mid, l - 1) <= x[r + 1]){
                    ans = mid; ri = mid - 1;
                }else{
                    le = mid + 1;
                }
            }
            res += x[l] - x[ans]; 
            if(r < n)res += x[++r] - x[ans];
            l = ans;
        }else{
            // go right
            int le = r + 1, ri = n, ans = r;
            while(le <= ri){
                int mid = (le + ri) >> 1;
                if(getmn(r, mid - 1) > x[l - 1]){
                    ans = mid; le = mid + 1;
                }else{
                    ri = mid - 1;
                }
            }
            res += x[ans] - x[r];
            if(l > 1)res += x[ans] - x[--l];
            r = ans;
        }
        turn = !turn;
    }
    cout << res << "\n";
}
signed main(){
    ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
    cin >> n;
    for(int i = 1; i <= n; i++){
        cin >> x[i]; 
    }
    x[0] = -inf; x[n + 1] = inf;
    for(int i = 0; i < n; i++){
        mx[i][0] = 2 * x[i + 1] - x[i]; mn[i][0] = -x[i + 1] + 2 * x[i];
    }
    for(int i = 1; i < 18; i++){
        for(int j = 0; j + (1 << i) - 1 < n; j++){
            mx[j][i] = max(mx[j][i - 1], mx[j + (1 << (i - 1))][i - 1]);
            mn[j][i] = min(mn[j][i - 1], mn[j + (1 << (i - 1))][i - 1]);
        }
    }
    int q; cin >> q;
    while(q--){
        int s; cin >> s;
        solve(s);
    }
    return(0);
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 852 KB Output is correct
3 Correct 1 ms 852 KB Output is correct
4 Correct 1 ms 864 KB Output is correct
5 Correct 1 ms 852 KB Output is correct
6 Correct 1 ms 852 KB Output is correct
7 Correct 1 ms 852 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 852 KB Output is correct
15 Correct 1 ms 852 KB Output is correct
16 Correct 1 ms 868 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 852 KB Output is correct
3 Correct 1 ms 852 KB Output is correct
4 Correct 1 ms 864 KB Output is correct
5 Correct 1 ms 852 KB Output is correct
6 Correct 1 ms 852 KB Output is correct
7 Correct 1 ms 852 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 852 KB Output is correct
15 Correct 1 ms 852 KB Output is correct
16 Correct 1 ms 868 KB Output is correct
17 Correct 77 ms 60184 KB Output is correct
18 Correct 94 ms 60180 KB Output is correct
19 Correct 79 ms 60136 KB Output is correct
20 Correct 98 ms 60176 KB Output is correct
21 Correct 80 ms 60088 KB Output is correct
22 Correct 76 ms 60160 KB Output is correct
23 Correct 78 ms 60184 KB Output is correct
24 Correct 77 ms 60076 KB Output is correct
25 Correct 103 ms 60200 KB Output is correct
26 Correct 76 ms 60108 KB Output is correct
27 Correct 75 ms 60176 KB Output is correct
28 Correct 76 ms 60176 KB Output is correct
29 Correct 101 ms 60124 KB Output is correct
30 Correct 77 ms 60256 KB Output is correct
31 Correct 89 ms 60124 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 0 ms 340 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 0 ms 340 KB Output is correct
5 Correct 0 ms 340 KB Output is correct
6 Correct 0 ms 340 KB Output is correct
7 Correct 218 ms 59592 KB Output is correct
8 Correct 234 ms 62128 KB Output is correct
9 Correct 226 ms 62148 KB Output is correct
10 Correct 234 ms 62088 KB Output is correct
11 Correct 229 ms 62072 KB Output is correct
12 Correct 244 ms 62164 KB Output is correct
13 Correct 32 ms 4124 KB Output is correct
14 Correct 35 ms 1536 KB Output is correct
15 Correct 237 ms 63164 KB Output is correct
16 Correct 238 ms 63212 KB Output is correct
17 Correct 233 ms 63172 KB Output is correct
18 Correct 45 ms 4172 KB Output is correct

Subtask #4
55.0 / 55.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 340 KB Output is correct
2 Correct 1 ms 852 KB Output is correct
3 Correct 1 ms 852 KB Output is correct
4 Correct 1 ms 864 KB Output is correct
5 Correct 1 ms 852 KB Output is correct
6 Correct 1 ms 852 KB Output is correct
7 Correct 1 ms 852 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 340 KB Output is correct
14 Correct 1 ms 852 KB Output is correct
15 Correct 1 ms 852 KB Output is correct
16 Correct 1 ms 868 KB Output is correct
17 Correct 77 ms 60184 KB Output is correct
18 Correct 94 ms 60180 KB Output is correct
19 Correct 79 ms 60136 KB Output is correct
20 Correct 98 ms 60176 KB Output is correct
21 Correct 80 ms 60088 KB Output is correct
22 Correct 76 ms 60160 KB Output is correct
23 Correct 78 ms 60184 KB Output is correct
24 Correct 77 ms 60076 KB Output is correct
25 Correct 103 ms 60200 KB Output is correct
26 Correct 76 ms 60108 KB Output is correct
27 Correct 75 ms 60176 KB Output is correct
28 Correct 76 ms 60176 KB Output is correct
29 Correct 101 ms 60124 KB Output is correct
30 Correct 77 ms 60256 KB Output is correct
31 Correct 89 ms 60124 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 0 ms 340 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 0 ms 340 KB Output is correct
36 Correct 0 ms 340 KB Output is correct
37 Correct 0 ms 340 KB Output is correct
38 Correct 218 ms 59592 KB Output is correct
39 Correct 234 ms 62128 KB Output is correct
40 Correct 226 ms 62148 KB Output is correct
41 Correct 234 ms 62088 KB Output is correct
42 Correct 229 ms 62072 KB Output is correct
43 Correct 244 ms 62164 KB Output is correct
44 Correct 32 ms 4124 KB Output is correct
45 Correct 35 ms 1536 KB Output is correct
46 Correct 237 ms 63164 KB Output is correct
47 Correct 238 ms 63212 KB Output is correct
48 Correct 233 ms 63172 KB Output is correct
49 Correct 45 ms 4172 KB Output is correct
50 Correct 523 ms 64308 KB Output is correct
51 Correct 453 ms 64320 KB Output is correct
52 Correct 463 ms 64244 KB Output is correct
53 Correct 352 ms 64244 KB Output is correct
54 Correct 419 ms 64244 KB Output is correct
55 Correct 358 ms 64300 KB Output is correct
56 Correct 164 ms 64176 KB Output is correct
57 Correct 163 ms 64140 KB Output is correct
58 Correct 184 ms 64168 KB Output is correct