#include "overtaking.h"
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define pii pair<int,int>
#define fs first
#define sc second
#define pll pair<ll,ll>
const int mxn = 1010;
vector<pll> f[mxn];
ll X;
vector<ll> S;
int N,M;
void init(int L, int NN, std::vector<long long> T, std::vector<int> W, int XX, int MM, std::vector<int> SS){
N = NN,M = MM;
for(auto &i:SS)S.push_back(i);
X = XX;
for(int i = 0;i<N;i++){
f[0].push_back(pll(T[i],W[i]));
}
sort(f[0].begin(),f[0].end());
for(int i = 1;i<M;i++){
f[i] = f[i-1];
for(auto &j:f[i])j.fs = j.fs+j.sc*(S[i]-S[i-1]);
for(int j = 1;j<N;j++)f[i][j].fs = max(f[i][j-1].fs,f[i][j].fs);
sort(f[i].begin(),f[i].end());
}
#ifdef DEBUG
cerr<<"F: "<<endl;
for(int i = 0;i<M;i++){
for(auto &j:f[i])cerr<<j.fs<<','<<j.sc<<' ';
cerr<<endl;
}
#endif
for(int i = 0;i+1<M;i++){
for(int j = 0;j<N;j++){
f[i][j].sc = f[i][j].fs+f[i][j].sc*(S[i+1]-S[i]);
if(j)f[i][j].sc = max(f[i][j].sc,f[i][j-1].sc);
}
}
#ifdef DEBUG
cerr<<"F: "<<endl;
for(int i = 0;i<M;i++){
for(auto &j:f[i])cerr<<j.fs<<','<<j.sc<<' ';
cerr<<endl;
}
#endif
return;
}
long long arrival_time(long long Y)
{
ll now = Y;
for(int i = 0;i+1<M;i++){
ll est = now+X*(S[i+1]-S[i]);
auto it = lower_bound(f[i].begin(),f[i].end(),pll(now,-1));
if(it == f[i].begin())now = est;
else now = max(now,prev(it)->sc);
}
return now;
}
