Submission #891157

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
891157	2023-12-22 09:09:45	vjudge1	Bitaro's travel (JOI23_travel)	C++17	100 / 100	411 ms	4432 KiB

travel

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#include <bits/stdc++.h>
using namespace std;
#define int long long
#define all(x) x.begin(), x.end()
#define size(x) (int)x.size()
template<class S, class T>
bool chmin(S &a, const T &b) {
    return a > b && (a = b) == b;
}
template<class S, class T>
bool chmax(S &a, const T &b) {
    return a < b && (a = b) == b;
}
const int inf = 1e9 + 7;
const int INF = 1e18 + 7;
const int mod = 998244353;
int n;
vector<int> x;
int solve(int l, int r, bool direction) {
    int p = x[direction ? r : l];
    if (l == 0) {
        return x[n - 1] - p;
    } else if (r == n - 1) {
        return p - x[0];
    } else if (p - x[l - 1] <= x[r + 1] - p) {
        int q = lower_bound(all(x), 2 * p - x[r + 1]) - x.begin();
        return p - x[q] + solve(q, r, false);
 
 
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• Subtask 1: 5 / 5
• Subtask 2: 10 / 10
• Subtask 3: 30 / 30
• Subtask 4: 55 / 55