#include "overtaking.h"
#include <bits/stdc++.h>
using namespace std;
#define int64_t long long
vector<int> W, S;
vector<int64_t> T;
int N, L, M, X;
void init(int L, int N, std::vector<long long> T, std::vector<int> W, int X, int M, std::vector<int> S) {
::T = T;
::W = W;
::S = S;
::N = N;
::L = L;
::M = M;
::X = X;
::W.emplace_back(X);
::T.emplace_back(0);
::N++;
}
long long arrival_time(long long Y) {
vector<vector<int64_t>> t(M, vector<int64_t>(N));
vector<vector<int64_t>> e(M, vector<int64_t>(N));
T.back() = Y;
for (int i = 0; i < N; i++) t[0][i] = T[i];
vector<int> ord(N);
iota(ord.begin(), ord.end(), 0);
for (int i = 0; i < M - 1; i++) {
for (int j = 0; j < N; j++) {
e[i + 1][j] = t[i][j] + 1ll * W[j] * (S[i + 1] - S[i]);
}
sort(ord.begin(), ord.end(), [&](int a, int b) {
return t[i][a] < t[i][b];
});
int64_t time = 0;
for (int j = 0; j < N;) {
int k = j;
while (k < N && t[i][ord[k]] == t[i][ord[j]]) k++;
for (int z = j; z < k; z++) t[i + 1][ord[z]] = max(time, e[i + 1][ord[z]]);
for (int z = j; z < k; z++) time = max(time, e[i + 1][ord[z]]);
j = k;
}
}
return t.back().back();
}
