Submission #580497

#	Time	Username	Problem	Language	Result	Execution time	Memory
580497		joelau	Carnival Tickets (IOI20_tickets)	C++14	0 / 100	204 ms	54296 KiB

tickets

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

long long A[1005], B[1005];
pair<long long,long long> lst[1005];

long long find_maximum(int k, vector<vector<int>> x) {
	long long N = x.size(), M = x[0].size();
	memset(A,0,sizeof(A)); memset(B,0,sizeof(B));
	for (long long i = 0; i < N; ++i) {
		lst[i] = make_pair(0,i);
		for (long long j = 0; j < M; ++j) lst[i].first += x[i][j];
		while (B[i] < M && x[i][B[i]] == 0) B[i]++;
	}
	long long val = 0;
	vector< vector<int> > ans (N, vector<int>(M,-1));
	for (long long i = 0; i < k; ++i) {
		sort(lst,lst+N);
		for (long long j = 0; j < N/2; ++j) {
			long long n = lst[j].second;
			if ((A[n] < M && x[n][A[n]] == 0) || B[n] >= M) ans[n][A[n]] = i, A[n]++;
			else ans[n][B[n]] = i, B[n]++, val--, lst[j].first--;
		}
		for (long long j = N/2; j < N; ++j) {
			long long n = lst[j].second;
			if (B[n] < M) ans[n][B[n]] = i, B[n]++, val++, lst[j].first--;
			else ans[n][A[n]] = i, A[n]++;
		}
	}
	allocate_tickets(ans);
	return val;
}

• Subtask 1: 0 / 11
• Subtask 2: 0 / 16
• Subtask 3: 0 / 14
• Subtask 4: 0 / 14
• Subtask 5: 0 / 12
• Subtask 6: 0 / 23
• Subtask 7: 0 / 10