Submission #119262

#	Time	Username	Problem	Language	Result	Execution time	Memory
119262		SuperJava	Robots (IOI13_robots)	C++17	76 / 100	2838 ms	40264 KiB

robots

#include <vector>
#include <utility>
#include <iostream>
#include <tuple>
#include <algorithm>
#include <map>
#include <set>
#include <queue>
using namespace std;
#include "robots.h"

int putaway(int A, int B, int T, int X[], int Y[], int W[], int S[]) {
	vector<pair<int,int>> ok;
	for (int i = 0; i < T; ++i){
		ok.push_back({S[i],W[i]});
	}
	sort(X,X+A);
	reverse(X,X+A);
	sort(Y,Y+B);
	reverse(Y,Y+B);
	int l = (T+A+B-1)/(A+B),r = T,ans = -1;
	while(l <= r){
		int mid = (l+r)/2;
		bool good = true;
		multiset<int> ava;
		vector<int> v;
		vector<int> ad;
		// (S W) (Y X)
		vector<pair<int,int>> q;
		for (int i = 0; i < min(T,A*mid); ++i){
			ava.insert(X[i/mid]);
		}
		for (int i = 0; i < min(T,B*mid); ++i){
			ad.push_back(Y[i/mid]);
		}
		for (int i = 0; i < T; ++i){
			q.push_back(ok[i]);
		}
		sort(q.begin(), q.end(),[](auto e,auto z){
			if(e.first == z.first) return e.second > z.second;
			return e.first < z.first;
		});
		vector<int> rest;
		while(size(q)){
			auto fr = q.back();q.pop_back();
			auto fl = ava.upper_bound(fr.second);
			if(fl == ava.end()){
				rest.push_back(fr.first);
			}else{
				ava.erase(fl);
			}
		}
		sort(rest.begin(), rest.end());
		reverse(rest.begin(), rest.end());
		if(size(ad) >= size(rest)){
			for(int i = 0; i < size(rest);i++){
				if(ad[i] <= rest[i]){
					good = false;
					break;
				}
			}
		}else good = false;
		if(good){
			ans = mid;
			r = mid-1;
		}else{
			l = mid+1;
		}
	}
	return ans;
}

Compilation message (stderr)

robots.cpp: In function 'int putaway(int, int, int, int*, int*, int*, int*)':
robots.cpp:56:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(int i = 0; i < size(rest);i++){
                   ~~^~~~~~~~~~~~

• Subtask 1: 14 / 14
• Subtask 2: 0 / 14
• Subtask 3: 25 / 25
• Subtask 4: 37 / 37
• Subtask 5: 0 / 10