제출 #709734

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
709734		Antekb	Furniture (JOI20_furniture)	C++17	0 / 100	8 ms	468 KiB

furniture

#include<bits/stdc++.h>

#define st first
#define nd second
#define eb emplace_back
#define pb push_back
#define pp pop_back
#define all(x) x.begin(), x.end()

using namespace std;

using ll = long long;
using pii = pair<int, int>;
using vi = vector<int>;

void debug(){cerr<<"\n";}
template<typename H, typename... T>
void debug(H h, T... t){cerr<<h;if(sizeof...(t))cerr<<", ";debug(t...);};
#define deb(x...) cerr<<#x<<" = ";debug(x);

mt19937 rng(chrono::high_resolution_clock::now().time_since_epoch().count());

const int N=1e3+5, INF=1e9+5;
set<int> S[N];
int dp[N], dp2[N];
int main(){
	//ios_base::sync_with_stdio(0);cin.tie(0);
	int n, m;
	cin>>n>>m;
	for(int i=1; i<=n; i++){
		S[i].insert(m+1);
		if(i!=1)S[i].insert(0);
		for(int j=1; j<=m; j++){
			int x;
			cin>>x;
			if(x)S[i].insert(j);
		}
	}
	dp[0]=1;
	for(int i=1; i<=n; i++){
		auto it=S[i].lower_bound(dp[i-1]-1);
		dp[i]=*it;
	}
	dp2[n]=m-1;
	for(int i=n-1; i>0; i--){
		auto it=S[i+1].upper_bound(dp2[i+1]);
		it--;
		dp2[i]=1+*it;
	}
	
	int q;
	cin>>q;
	while(q--){
		/*for(int i=1; i<=n; i++){
			deb(dp[i], dp2[i]);
		}*/
		int x, y;
		cin>>x>>y;
		if(y>dp2[x] || y<dp[x-1]-1){
			cout<<1<<"\n";
			S[x].insert(y);
			for(int i=x; i<=n; i++){
				auto it=S[i].lower_bound(dp[i-1]-1);
				if(dp[i]==*it)break;
				dp[i]=*it;
			}
				for(int i=x-1; i>0; i--){
					auto it=S[i+1].upper_bound(dp2[i+1]);
					it--;
					if(dp2[i]==1+*it)break;
					dp2[i]=1+*it;
				}
		}
		else{
			cout<<0<<"\n";
		}
	}
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 95