Submission #793560

#	Time	Username	Problem	Language	Result	Execution time	Memory
793560		UltraFalcon	Teams (IOI15_teams)	C++17	0 / 100	4046 ms	43668 KiB

teams

// pragmas
#ifndef DEBUG

#endif

#include <bits/stdc++.h>
#include "teams.h"

// #define int long long
using ll = long long;

using namespace std;

int N;
vector<int> A;
vector<int> B;
vector<array<int, 2>> students_b;
set<array<int, 2>> students_a;

int cnt = 0;
void init(int _N, int _A[], int _B[]) {
	cnt = 0;
	N = _N;
	A.assign(N, -1);
	for (int i=0; i<N; i++) {
		A[i] = _A[i];
	}
	B.assign(N, -1);
	for (int i=0; i<N; i++) {
		B[i] = _B[i];
	}

	students_b.clear();
	for (int i=0; i<N; i++) {
		students_b.push_back({B[i], i});
	}
	sort(students_b.begin(), students_b.end());
	students_a.clear();
	for (int i=0; i<N; i++) {
		students_a.insert({A[i], i});
	}
}

int can(int M, int _K[]) {
	cnt++;

	vector<int> K;
	for (int i=0; i<M; i++) {
		K.push_back(_K[i]);
	}
	sort(K.begin(), K.end());
	
	int j = 0;
	for (int i=0; i<M; i++) {
		while (j<N && students_b[j][0]<K[i]) {
			int idx = students_b[j][1];
			if (students_a.count({A[idx], idx})) 
				students_a.erase({A[idx], idx});
			j++;
		}
		for (int l=0; l<K[i]; l++) {
			if (students_a.empty()) return 0;
			int idx = (*students_a.begin())[1];
			// if (! (A[idx] <= K[i] && B[idx] >= K[i]) ) {
			// 	// for (auto &x : K) {
			// 	// 	cerr << x << " ";
			// 	// }
			// 	// cerr << "--" << cnt << "\n";
			// 	cerr << A[idx] << " " << idx << "\n";
			// 	cerr << K[i] << "\n";
			// 	assert(A[idx] <= K[i] && B[idx] >= K[i]);
			// }
			if (A[idx] > K[i]) return 0;
			students_a.erase(students_a.begin());
		}
	}

	return 1;
}

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