Submission #500931

#	Time	Username	Problem	Language	Result	Execution time	Memory
500931		sidon	Painting Walls (APIO20_paint)	C++17	0 / 100	1578 ms	288 KiB

paint

#include <bits/stdc++.h>
using namespace std;
#define V vector<int>

int minimumInstructions(int N, int M, int K, V C, V A, vector<V> B) {
	V g[K], x(M), y(M), dp(N+1);
	int ans = 0, i, j;

	for(i = 0; i < M; i++)
		for(int &s : B[i]) g[s].push_back(i);

	for(i = N; --i >= 0; x.swap(y)) {
		if(i+2 < N)
			for(int s : g[C[i+2]]) x[s] = 0;

		for(int s : g[C[i]]) 
			if((x[s] = 1 + y[(s + 1) % M]) >= M) dp[i] = 1;
	}

	for(dp[N] = dp[i=0]; i < N; i = j, ans++)
		for(j = min(N, i+M); j >= i && !dp[j]; --j)
			if(i == j) return -1;

	return ans;
}

• Subtask 1: 0 / 12
• Subtask 2: 0 / 15
• Subtask 3: 0 / 13
• Subtask 4: 0 / 23
• Subtask 5: 0 / 37