Submission #414209

#	Time	Username	Problem	Language	Result	Execution time	Memory
414209		ja_kingy	Teams (IOI15_teams)	C++14	34 / 100	4097 ms	14304 KiB

teams

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

typedef pair<int,int> pii;
const int X = 700;
vector<pii> order, buckets[X];

#define r first
#define l second

void init(int N, int A[], int B[]) {
	for (int i = 0; i < N; ++i) {
		order.push_back({B[i], A[i]});
	}
	sort(order.begin(), order.end());
	for (pii p: order) buckets[min(p.r,X-1)].push_back({p.r, p.l});
}

int can(int M, int K[]) {
	int sm = accumulate(K, K+M, 0), lft = 0;
	vector<int> ks(K, K+M);
	sort(ks.begin(), ks.end(), greater<int>());
	map<int, int> req;
	if (sm < X) {
		for (int r = 1; r < X; ++r) {
			while (ks.size() && ks.back() <= r) {
				lft = ks.back();
				req[ks.back()] += ks.back();
				ks.pop_back();
			}
			for (pii p: buckets[r]) {
				if (p.l <= lft) {
					auto it = req.lower_bound(p.l);
					it->second--;
					if (it->second == 0) req.erase(it);
					lft = req.size() ? (--req.end())->first : 0;
				} else break;
			}
		}	
	} else {
		for (pii p: order) {
			while (ks.size() && ks.back() <= p.r) {
				lft = ks.back();
				req[ks.back()] += ks.back();
				ks.pop_back();
			}
			if (p.l <= lft) {
				auto it = req.lower_bound(p.l);
				it->second--;
				if (it->second == 0) req.erase(it);
				lft = req.size() ? (--req.end())->first : 0;
			}
		}
	}
	return req.size() == 0;
}

• Subtask 1: 21 / 21
• Subtask 2: 13 / 13
• Subtask 3: 0 / 43
• Subtask 4: 0 / 23