Submission #401923

#	Time	Username	Problem	Language	Result	Execution time	Memory
401923		faresbasbs	Painting Walls (APIO20_paint)	C++14	0 / 100	3 ms	2648 KiB

paint

#include <bits/stdc++.h>
#include "paint.h"
using namespace std;
vector<int> vals[100001];

int minimumInstructions(int n , int m , int K , vector<int> c , vector<int> A , vector<vector<int>> B){
	for(int i = 0 ; i < m ; i += 1){
		for(auto j : B[i]){
			vals[j].push_back(i);
		}
	}
	vector<pair<int,pair<int,int>>> q,q2;
	for(int i : vals[c[0]]){
		q.push_back({i,{1,1}});
	}
	for(int i = 1 ; i < n ; i += 1){
		q2.clear();
		int mini = 1000000000;
		for(auto j : q){
			mini = min(mini,j.second.second);
			if(j.second.first == m){
				continue;
			}
			if(*lower_bound(vals[c[i]].begin(),vals[c[i]].end(),(j.first+1)%m) == (j.first+1)%m){
				q2.push_back({(j.first+1)%m,{j.second.first+1,j.second.second}});
			}
		}
		for(auto j : vals[c[i]]){
			q2.push_back({j,{1,mini+1}});
		}
		swap(q,q2);
	}
	int mini = 1000000000;
	for(auto i : q){
		if(i.second.first == m){
			mini = min(mini,i.second.second);
		}
	}
	if(mini == 1000000000){
		return -1;
	}
	return mini;
}

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