이 제출은 이전 버전의 oj.uz에서 채점하였습니다. 현재는 제출 당시와는 다른 서버에서 채점을 하기 때문에, 다시 제출하면 결과가 달라질 수도 있습니다.
#include "overtaking.h"
#include <algorithm>
#include <iostream>
using namespace std;
long long int q, y, n, m, l, x;
long long int t[1005][1005], T[1005], w[1005];
long long int s[1005];
class Time
{
public:
long long int ti, speed, id;
bool operator<(const Time &Ti)
{
if (ti != Ti.ti)
return ti < Ti.ti;
return speed < Ti.speed;
}
} prevtime[1005], sorted_time[1005][1005];
long long int pre_max_time[1005][1005];
void init(int L, int N, std::vector<long long> _T, std::vector<int> W, int X, int M, std::vector<int> S)
{
n = N;
x = X;
m = M;
for (int i = 0; i < n; i++)
{
T[i] = _T[i];
w[i] = W[i];
t[i][0] = T[i];
prevtime[i].ti = T[i];
prevtime[i].speed = W[i];
prevtime[i].id = i;
}
for (int i = 0; i < m; i++)
s[i] = S[i];
for (int i = 1; i < m; i++)
{
sort(prevtime, prevtime + n);
long long int premax = 0;
for (int j = 0; j < n; j++)
{
long long int nxttime = prevtime[j].ti + (S[i] - S[i - 1]) * prevtime[j].speed;
t[i][prevtime[j].id] = max(premax, nxttime);
premax = max(premax, t[i][prevtime[j].id]);
}
for (int j = 0; j < n; j++)
{
prevtime[j].ti = t[i][j];
prevtime[j].speed = W[j];
prevtime[j].id = j;
}
}
for (int i = 0; i < m; i++)
{
for (int j = 0; j < n; j++)
{
sorted_time[i][j].ti = t[i][j];
sorted_time[i][j].speed = W[j];
sorted_time[i][j].id = j;
}
sort(sorted_time[i], sorted_time[i] + n);
for (int j = 0; j < n; j++)
{
pre_max_time[i][j] = t[i + 1][sorted_time[i][j].id];
if (j != 0)
pre_max_time[i][j] = max(pre_max_time[i][j], pre_max_time[i][j - 1]);
// cout << i << " " << j << " " << pre_max_time[i][j] << " " << sorted_time[i][j].id << endl;
}
}
return;
}
long long arrival_time(long long Y)
{
for (int i = 0; i < m - 1; i++)
{
Time now;
now.ti = Y;
now.speed = x;
int l = 0, r = n - 1, tar = -1;
while (l <= r)
{
int mid = (l + r) / 2;
if (now < sorted_time[i][mid])
{
r = mid - 1;
}
else
{
tar = mid;
l = mid + 1;
}
}
Y += (s[i + 1] - s[i]) * x;
// cout << i << " " << tar << endl;
if (tar != -1)
{
Y = max(Y, pre_max_time[i][tar]);
}
// cout << Y << endl;
}
return Y;
}
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