Submission #729229

#	Time	Username	Problem	Language	Result	Execution time	Memory
729229		nihaddhuseynli	Patkice (COCI20_patkice)	C++14	50 / 50	1 ms	340 KiB

patkice

#include <bits/stdc++.h>
using namespace std;
 
#define int long long
const int INF = 1e18;
 
void solve(){
    int n, m; cin >> n >> m;
    vector<vector<char>> a(n, vector<char>(m));
 
    int sx, sy;
    for(int i=0; i<n; i++)
    for(int j=0; j<m; j++){
        cin >> a[i][j];
        if(a[i][j] == 'o')
            sx = i, sy = j;
    }
 
    char ans; int dist = INF;
    function<void(int, int, int, char)> dfs = [&](int x, int y, int d, char c){
        if(a[x][y] == 'o' || a[x][y] == '.') return;
        if(a[x][y] == 'x'){
            if(d < dist || (d == dist && c < ans)){
                ans = c;
                dist = d;
            }
        }
 
        if(a[x][y] == '>') dfs(x, y+1, d+1, c);
        if(a[x][y] == '<') dfs(x, y-1, d+1, c);
        if(a[x][y] == 'v') dfs(x+1, y, d+1, c);
        if(a[x][y] == '^') dfs(x-1, y, d+1, c);
    };
    dfs(sx-1, sy, 1, 'N');
    dfs(sx, sy+1, 1, 'E');
    dfs(sx+1, sy, 1, 'S');
    dfs(sx, sy-1, 1, 'W');
 
    if(dist == INF) cout << ":(\n";
    else cout << ":)\n" << ans << "\n";
}
 
signed main(){
    ios::sync_with_stdio(false);
    cin.tie(0);
 
    // freopen("in.txt", "r", stdin);
    // freopen("out.txt", "w", stdout);
 
    solve();
    return 0;
}

Compilation message (stderr)

patkice.cpp: In function 'void solve()':
patkice.cpp:37:8: warning: 'sy' may be used uninitialized in this function [-Wmaybe-uninitialized]
   37 |     dfs(sx, sy-1, 1, 'W');
      |     ~~~^~~~~~~~~~~~~~~~~~
patkice.cpp:11:9: warning: 'sx' may be used uninitialized in this function [-Wmaybe-uninitialized]
   11 |     int sx, sy;
      |         ^~

• Subtask 1: 30 / 30
• Subtask 2: 20 / 20