Submission #848214

#	Time	Username	Problem	Language	Result	Execution time	Memory
848214		haxorman	Overtaking (IOI23_overtaking)	C++17	39 / 100	3602 ms	17744 KiB

overtaking

#include "overtaking.h"
#include <bits/stdc++.h>
using namespace std;

#define int long long

const int mxN = 1007;

int n, len, x, m, y, t[mxN][mxN], e[mxN][mxN], gt[mxN][mxN], pref[mxN][mxN];
vector<int> s, vec;
vector<pair<int,int>> arr;

int cur_ind;
bool cmp(int a, int b) {
    if (t[a][cur_ind] == t[b][cur_ind]) {
        return arr[a].second < arr[b].second;
    }
    return t[a][cur_ind] < t[b][cur_ind];
}

void init(int32_t L, int32_t N, std::vector<long long> T, std::vector<int32_t> W, int32_t X, int32_t M, std::vector<int32_t> S)
{
    n = N, len = L, m = M, x = X;

    vector<int> inds;
    for (int i = 0; i < n; ++i) {
        arr.push_back({T[i], W[i]});
        vec.push_back(T[i]);

        inds.push_back(i);
    }
    sort(arr.begin(), arr.end());
    sort(vec.begin(), vec.end());
    for (int i = 0; i < n; ++i) {
        t[i][0] = arr[i].first;
    }

    for (int i = 0; i < m; ++i) {
        s.push_back(S[i]);
    }
    
    for (int j = 1; j < m; ++j) {
        for (int i = 0; i < n; ++i) {
            e[i][j] = t[i][j - 1] + arr[i].second * (s[j] - s[j - 1]);
        }
        cur_ind = j - 1;
        sort(inds.begin(), inds.end(), cmp);
        
        int mx = 0;
        for (auto i : inds) {
            mx = max(mx, e[i][j]);
            t[i][j] = mx;
        }
    }
}

long long arrival_time(long long Y)
{
    y = Y;
    t[n][0] = y;
    for (int j = 1; j < m; ++j) {
        e[n][j] = t[n][j - 1] + x * (s[j] - s[j - 1]);
        
        t[n][j] = e[n][j];
        for (int i = 0; i < n; ++i) {
            if (t[i][j - 1] < t[n][j - 1]) {
                t[n][j] = max(t[n][j], e[i][j]);
            }
        }
    }
    return t[n][m - 1];
}

• Subtask 0: 0 / 0
• Subtask 1: 9 / 9
• Subtask 2: 10 / 10
• Subtask 3: 20 / 20
• Subtask 4: 0 / 26
• Subtask 5: 0 / 35