Submission #775572

#	Time	Username	Problem	Language	Result	Execution time	Memory
775572		LeaRouse	Trampoline (info1cup20_trampoline)	C++14	23 / 100	14 ms	468 KiB

trampoline

#include <bits/stdc++.h>
#define fastio ios_base::sync_with_stdio(0); cin.tie(0);
#define ff first
#define ss second
#define ll long long
using namespace std;
const int MAX=2e2+5;
int A[MAX][MAX];
int r,c;
bool vis[MAX][MAX];
void ini(){
	for(int i=0;i<=r;i++){
		for(int j=0;j<=c;j++){
			vis[i][j]=0;
		}
	}
}
void bfs(int a,int b){
	vis[a][b]=1;
	queue<pair<int,int>>q;
	q.push({a,b});
	while(q.size()!=0){
		int u=q.front().ff;
		int v=q.front().ss;
		q.pop();
		if(A[u][v]){
			if(v+1<=c and !vis[u][v+1]){
				q.push({u,v+1});
				vis[u][v+1]=1;
			}
			if(u+1<=r and !vis[u+1][v]){	
				q.push({u+1,v});
				vis[u+1][v]=1;
			}
		}
		else{
			if(v+1<=c and !vis[u][v+1]){
				q.push({u,v+1});
				vis[u][v+1]=1;
			}
		}
	}
}

void go(){
	int n;	cin>>r>>c>>n;
	for(int i=0;i<n;i++){
		int a,b;	cin>>a>>b;
		A[a][b]=1;
	}
	int t;	cin>>t;
	while(t--){
		ini();
		int a,b,c,d;	cin>>a>>b>>c>>d;
		bfs(a,b);
		if(vis[c][d])	cout<<"Yes"<<endl;
		else	cout<<"No"<<endl;
	}
}

int main(){
	fastio;
	go();
	return 0;
}

• Subtask 1: 23 / 23
• Subtask 2: 0 / 20
• Subtask 3: 0 / 11
• Subtask 4: 0 / 19
• Subtask 5: 0 / 27