Submission #776224

#	Time	Username	Problem	Language	Result	Execution time	Memory
776224		vjudge1	Awesome Arrowland Adventure (eJOI19_adventure)	C++17	12 / 100	1 ms	324 KiB

adventure

#include<bits/stdc++.h>
using namespace std;
#define lalala ios_base::sync_with_stdio(false);cin.tie(NULL);
//#define endl "\n"
#define ll long long
#define pb push_back
#define p push
#define f first
#define s second
ll int fark[5][5];
int main(){
	lalala;
	int n,m;
	cin>>m>>n;
	ll int uzak[n][m],arr[n][m];
	for(int i=0;i<n;i++){
		string str;cin>>str;
		for(int j=0;j<str.size();j++){

			uzak[i][j]=1000000000000000000;
			if(str[j]=='E')arr[i][j]=1;
			if(str[j]=='S')arr[i][j]=2;
			if(str[j]=='W')arr[i][j]=3;
			if(str[j]=='N')arr[i][j]=4;
			if(str[j]=='X')arr[i][j]=0;

		}
	}
	fark[0][1]=fark[0][2]=fark[0][3]=fark[0][4]=1000000000000000000;
	fark[1][0]=fark[2][0]=fark[3][0]=fark[4][0]=1000000000000000000;
	fark[1][2]=1;fark[1][3]=2;fark[1][4]=3;
	fark[2][1]=3;fark[2][3]=1;fark[2][4]=2;
	fark[3][1]=2;fark[3][2]=3;fark[3][4]=1;
	fark[4][1]=1;;fark[4][2]=2;fark[4][3]=3;
	priority_queue<pair<int,pair<int,int>>> pq;
	pq.p({0,{0,0}});
	while(pq.size()){
		ll int deg=pq.top().f, x=pq.top().s.f, y=pq.top().s.s;
		pq.pop();
		//cout<<deg<<" "<<x<<" "<<y<<" "<<uzak[x][y]<<endl;
		if(deg>=uzak[x][y])continue;
		uzak[x][y]=deg;
		int kim=arr[x][y];
		if(kim==0)continue;
		if(x!=0)pq.p({deg+fark[kim][4],{x-1,y}});
		
		if(x!=n-1)pq.p({deg+fark[kim][2],{x+1,y}});
		
		if(y!=0)pq.p({deg+fark[kim][3],{x,y-1}});

		if(y!=m-1)pq.p({deg+fark[kim][1],{x,y+1}});
	}
	if(uzak[n-1][m-1]==1000000000000000000)uzak[n-1][m-1]=-1;
	cout<<uzak[n-1][m-1]<<endl;

}

Compilation message (stderr)

adventure.cpp: In function 'int main()':
adventure.cpp:18:16: warning: comparison of integer expressions of different signedness: 'int' and 'std::__cxx11::basic_string<char>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   18 |   for(int j=0;j<str.size();j++){
      |               ~^~~~~~~~~~~

• Subtask 1: 0 / 10
• Subtask 2: 0 / 12
• Subtask 3: 12 / 12
• Subtask 4: 0 / 16
• Subtask 5: 0 / 50