Submission #411634

#	Time	Username	Problem	Language	Result	Execution time	Memory
411634		albertolg101	Wombats (IOI13_wombats)	C++17	0 / 100	20004 ms	20512 KiB

wombats

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

using namespace std;

using pii = pair<int, int>;

const int INF = 2e9;
int n, m;
vector<vector<int>> h(5001, vector<int> (201)), v = h, dp = h;
bool sol = false;

void init(int R, int C, int H[5000][200], int V[5000][200]) {
	n = R, m = C;

	for(int i = 0 ; i < R ; i++)
	{
		for(int j = 0 ; j < C - 1 ; j++)
		{
			h[i][j] = H[i][j];
		}
	}

	for(int i = 0 ; i < R - 1 ; i++)
	{
		for(int j = 0 ; j < C ; j++)
		{
			v[i][j] = V[i][j];
		}
	}
}

void changeH(int P, int Q, int W) {
	h[P][Q] = W;
	sol = false;
}

void changeV(int P, int Q, int W) {
	v[P][Q] = W;
	sol = false;
}

int escape(int V1, int V2)
{
	for(int i = 0 ; i < m ; i++)
	{
		dp[n-1][i] = INF;
	}
	dp[n-1][V2] = 0;

	for(int i = n - 1 ; i >= 0 ; i--)
	{
		set<pii> s;

		for(int j = 0 ; j < m ; j++)
			s.insert({dp[i][j], j});

		while(s.size())
		{
			int j, dist, dist2;
			tie(dist, j) = *s.begin();
			dist2 = dist;
			s.erase(s.begin());

			if(dp[i][j] < dist)
				continue;

			for(int k = j + 1 ; k < m ; k++)
			{
				if(dp[i][k] > dist + h[i][k-1])
				{
					dp[i][k] = dist + h[i][k-1];
					dist += h[i][k-1];
				}

				else 
					break;
			}

			for(int k = j - 1 ; k >= 0 ; k--)
			{
				dist2 += h[i][k];

				if(dp[i][k] > dist2 + h[i][k])
				{
					dp[i][k] = dist2 + h[i][k];
				}

				else
					break;
			}
		}

		for(int j = 0 ; j < m  and i != 0; j++)
		{
			dp[i-1][j] = dp[i][j] + v[i-1][j];
		}
	}
	/*
	for(int i = 0 ; i < n ; i++)
	{
		for(int j = 0 ; j < m - 1; j++)
		{
			cout << h[i][j] << ' ' ; 
		}

		cout << endl ;
	}

	cout << endl ;

	for(int i = 0 ; i < n - 1 ; i++)
	{
		for(int j = 0 ; j < m ; j++)
		{
			cout << v[i][j] << ' ' ; 
		}

		cout << endl ;
	}

	cout << endl ;

	for(int i = 0 ; i < n ; i++)
	{
		for(int j = 0 ; j < m ; j++)
		{
			cout << dp[i][j] << ' ' ; 
		}
		cout << endl;
	}
	*/
	return dp[0][V1];
}

Compilation message (stderr)

grader.c: In function 'int main()':
grader.c:15:6: warning: variable 'res' set but not used [-Wunused-but-set-variable]
   15 |  int res;
      |      ^~~

• Subtask 1: 0 / 9
• Subtask 2: 0 / 12
• Subtask 3: 0 / 16
• Subtask 4: 0 / 18
• Subtask 5: 0 / 21
• Subtask 6: 0 / 24