/*
In the name of Allah
made by: Ahmed_Solyman
*/
#include <bits/stdc++.h>
#include <ext/rope>
using namespace std;
using namespace __gnu_cxx;
#pragma GCC optimize("-Ofast")
#pragma GCC optimize("-O1")
//-------------------------------------------------------------//
typedef long long ll;
typedef unsigned long long ull;
#define fast ios_base::sync_with_stdio(0);cin.tie(0);cout.tie(0);
#define PI acos(-1)
#define lb lower_bound
#define ub upper_bound
#define endl '\n'
#define all(v) v.begin(),v.end()
#define allr(v) v.rbegin(),v.rend()
#define sum_to(n) (n*(n+1))/2
#define pb push_back
#define pf push_front
#define fil(arr,x) memset(arr,x,sizeof(arr))
const ll mod=1e9+7;
int dx[8]={0,1,0,-1,1,1,-1,-1};
int dy[8]={1,0,-1,0,1,-1,-1,1};
//-------------------------------------------------------------//
ll lcm(ll a,ll b)
{
return (max(a,b)/__gcd(a,b))*min(a,b);
}
void person_bool(bool x)
{
cout<<(x?"YES":"NO")<<endl;
}
const int N=105;
string arr[N];
int n,m;
bool vis[N][N];
void restart(){
for(int i=0;i<n;i++){
for(int j=0;j<m;j++){
vis[i][j]=0;
}
}
}
bool valid(int i,int j){
if(i>=0 && j>=0 && i<n && j<m && !vis[i][j]){
return 1;
}
return 0;
}
void dfs(int i,int j){
vis[i][j]=1;
if(arr[i][j]=='>' && valid(i,j+1))dfs(i,j+1);
if(arr[i][j]=='<' && valid(i,j-1))dfs(i,j-1);
if(arr[i][j]=='v' && valid(i+1,j))dfs(i+1,j);
if(arr[i][j]=='^' && valid(i-1,j))dfs(i-1,j);
}
int main()
{
//freopen("input.txt","r",stdin);
//freopen("output.txt","w",stdout);
#ifndef ONLINE_JUDGE
//freopen("input.in", "r", stdin);
//freopen("output.out", "w", stdout);
#endif
fast
cin>>n>>m;
int x,y,a,b;
for(int i=0;i<n;i++){
cin>>arr[i];
for(int j=0;j<m;j++){
if(arr[i][j]=='o'){
x=i;y=j;
}
if(arr[i][j]=='x'){
a=i;b=j;
}
}
}
string s="ESWN";
string ans="";
for(int i=0;i<4;i++){
restart();
dfs(x+dx[i],y+dy[i]);
if(vis[a][b]){
ans+=s[i];
}
}
if(ans.size()){
cout<<":)"<<endl;
char c='Z';
for(char f:s)c=min(c,f);
cout<<c<<endl;
return 0;
}
cout<<":("<<endl;
return 0;
}
Compilation message
patkice.cpp: In function 'int main()':
patkice.cpp:89:20: warning: 'b' may be used uninitialized in this function [-Wmaybe-uninitialized]
89 | if(vis[a][b]){
| ~~~~~~~~^
patkice.cpp:89:20: warning: 'a' may be used uninitialized in this function [-Wmaybe-uninitialized]
patkice.cpp:88:12: warning: 'y' may be used uninitialized in this function [-Wmaybe-uninitialized]
88 | dfs(x+dx[i],y+dy[i]);
| ~~~^~~~~~~~~~~~~~~~~
patkice.cpp:88:12: warning: 'x' may be used uninitialized in this function [-Wmaybe-uninitialized]
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
1 ms |
348 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Correct |
0 ms |
348 KB |
Output is correct |
| 2 |
Incorrect |
0 ms |
348 KB |
Output isn't correct |
| 3 |
Halted |
0 ms |
0 KB |
- |
