Submission #364005

#	Time	Username	Problem	Language	Result	Execution time	Memory
364005		super_j6	Sailing Race (CEOI12_race)	C++14	5 / 100	594 ms	15468 KiB

race

#include <iostream>
#include <cstdio>
#include <algorithm>
#include <vector>
using namespace std;
#define endl '\n'
#define ll long long
#define pi pair<int, int>
#define f first
#define s second
 
const int mxn = 1000;
int n, k;
int dp[mxn][mxn][2], f[mxn][mxn][2];
vector<int> g[mxn];
 
int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	
	cin >> n >> k;
	
	for(int i = 0, x; i < n; i++)
	for(cin >> x; x; cin >> x)
	for(int j = 0; j < 2; j++)
	for(int l = 0; l < 2; l++){
		g[l * n + x - 1].push_back(j * n + i);
	}
	
	int ret = 0, x = 0;
	for(int i[2] = {0}; i[0] < 2 * n; i[0]++)
	for(i[1] = i[0]; i[1] < 2 * n && i[1] - i[0] < n; i[1]++)
	for(int j = 0; j < 2; j++){
		int &dpc = dp[i[0]][i[1]][j], &ff = f[i[0]][i[1]][j];
		if(i[0] != i[1]) ff = max(dpc, f[i[0] + j][i[1] - !j][j]);
		if(dpc > ret) ret = dpc, x = i[j];
		
		for(int l : g[i[j]])
		for(int p = 0; p < 2; p++){
			if((l > i[p]) == p){
				int ii[2];
				ii[!p] = i[!p], ii[p] = l;
				dp[ii[0]][ii[1]][p] = max(dp[ii[0]][ii[1]][p], dpc + 1);
			}
		}
		ff = max(ff, dpc);
	}
	
	cout << ret << " " << (x % n + 1) << endl;
	
	return 0;
}

• Subtask 1: 5 / 100