Submission #330366

#	Time	Username	Problem	Language	Result	Execution time	Memory
330366		YJU	Furniture (JOI20_furniture)	C++14	100 / 100	430 ms	19920 KiB

furniture

#include<bits/stdc++.h>
#pragma GCC optimize("unroll-loops,no-stack-protector")
using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<ll,ll> pll;
const ll MOD=1e9+7;
const ll MOD2=998244353;
const ll N=1e3+5;
const ll K=350;
const ld pi=3.14159265359;
const ll INF=(1LL<<40);
#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 n,m,vis[N][N],c[4*N],x,y,q;

void DFS(ll a,ll b);

void push(ll a,ll b){
	if(vis[a][b]){
		vis[a][b]=0;
		--c[a+b];
		DFS(a,b);
	}
}

bool add(ll a,ll b){
	if(!vis[a][b])return 1;
	if(c[a+b]==1)return 0;
	push(a,b);
	return 1;
}

void DFS(ll a,ll b){
	if(!vis[a-1][b+1]){
		push(a-1,b);
		push(a,b+1);
	}
	if(!vis[a+1][b-1]){
		push(a+1,b);
		push(a,b-1);
	}
}

int main(){
	ios_base::sync_with_stdio(0);cin.tie(0);
	cin>>n>>m;
	REP1(i,n)REP1(j,m)vis[i][j]=1,++c[i+j];
	REP1(i,n)REP1(j,m){
		cin>>x;
		if(x)add(i,j);
	}
	cin>>q;
	while(q--){
		cin>>x>>y;
		cout<<add(x,y)<<"\n";
	}
	return 0;
}

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