제출 #848507

#제출 시각아이디문제언어결과실행 시간메모리
848507mohammedMonem추월 (IOI23_overtaking)C++17
0 / 100
1 ms348 KiB
#include <bits/stdc++.h> #include "overtaking.h" #define ll long long using namespace std; class bus { public: int id, speed; ll arrivalTime; explicit bus(int idP = 0, int speedP = 0, ll arrivalTimeP = 0) { id = idP, speed = speedP, arrivalTime = arrivalTimeP; } friend bool operator<(bus bus1, bus bus2) { if (bus1.arrivalTime == bus2.arrivalTime) { return bus1.speed < bus2.speed; } return bus1.arrivalTime < bus2.arrivalTime; } }; int reserveBusSpeed; vector<vector<ll>> trueArrivalTime;//for i bus and j station vector<int> sortingStations; void init(int L, int N, vector<ll> T, vector<int> W, int X, int M, vector<int> S) { trueArrivalTime.resize(N, vector<ll>(M)); for (int i = 0; i < N; ++i) { trueArrivalTime[i][0] = T[i]; } reserveBusSpeed = X, sortingStations = S; vector<ll> expectedArrivalTime(N);//for i bus and j station vector<bus> sortedBuses(N); for (int j = 1; j < M; ++j) { for (int i = 0; i < N; ++i) { sortedBuses[i] = bus(i, W[i], trueArrivalTime[i][j - 1]); expectedArrivalTime[i] = trueArrivalTime[i][j - 1] + W[i] * (S[j] - S[j - 1]); } ll movingBusesArrivalTime = 0; sort(sortedBuses.begin(), sortedBuses.end()); for (const auto &i: sortedBuses) { movingBusesArrivalTime = trueArrivalTime[i.id][j] = max(movingBusesArrivalTime, expectedArrivalTime[i.id]); } } } long long arrival_time(long long Y) { ll prevStationDepartingTime = Y; for (int j = 1; j < (int) sortingStations.size(); ++j) { ll reserveBusArrivalTime = prevStationDepartingTime + reserveBusSpeed * (sortingStations[j] - sortingStations[j - 1]); for (const auto &i: trueArrivalTime) { if (i[j - 1] < prevStationDepartingTime) { reserveBusArrivalTime = max(reserveBusArrivalTime, i[j]); } } prevStationDepartingTime = reserveBusArrivalTime; } return prevStationDepartingTime; }
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