Submission #370632

#	Time	Username	Problem	Language	Result	Execution time	Memory
370632		YJU	Painting Walls (APIO20_paint)	C++14	100 / 100	1395 ms	261788 KiB

paint

#include<bits/stdc++.h>
#pragma GCC optimize("unroll-loops,no-stack-protector,Ofast")
using namespace std;
typedef int ll;
typedef long double ld;
typedef pair<ll,ll> pll;
const ll MOD=1e9+7;
const ll MOD2=998244353;
const ll N=2e5+5;
const ld pi=acos(-1);
#define SQ(i) ((i)*(i))
#define REP(i,n) for(ll i=0;i<n;i++)
#define REP1(i,n) for(ll i=1;i<=n;i++)
#define pb push_back
#define mp make_pair
#define X first
#define Y second
#define setp setprecision
#define lwb lower_bound
#define SZ(_a) (ll)_a.size()

ll minimumInstructions(ll n,ll m,ll k,vector<ll> color,vector<ll> a,vector<vector<ll> > b){
	vector<vector<ll> > loc(k);
	for(int i=0;i<m;i++){
		for(int j=0;j<SZ(b[i]);j++)loc[b[i][j]].pb(i);
	}
	vector<vector<ll> > it(m);
	for(int i=0;i<n;i++){
		for(int j:loc[color[i]]){
			it[((j-i)%m+m)%m].pb(i);
		}
	}
	vector<ll> r(n,0);
	for(auto v:it){
		ll lst=n+1,len=0;
		for(int i=SZ(v)-1;i>=0;i--){
			if(v[i]+1!=lst)len=0;
			++len;
			r[v[i]]=max(r[v[i]],len);
			lst=v[i];
		}
	}
	vector<ll> lis;
	for(int i=0;i<n;i++)if(r[i]>=m)lis.pb(i);
	ll R=0,ans=0,id=0;
	while(R<n){
		while(id<SZ(lis)&&lis[id]<=R)++id;
		if(id==0)return -1;
		ll L=lis[id-1];
		if(L+m<=R)return -1;
		++ans;
		R=L+m;
	}
	return ans;
	
}
/*
int main(){
	ios_base::sync_with_stdio(0);cin.tie(0);

	return 0;
}
*/

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