Submission #847735

#	Time	Username	Problem	Language	Result	Execution time	Memory
847735		vjudge1	Overtaking (IOI23_overtaking)	C++17	39 / 100	3538 ms	16292 KiB

overtaking

#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();
}

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