oj.uz

Submission #447692

# Submission time Handle Problem Language Result Execution time Memory
447692 2021-07-27T10:48:10 Z PiejanVDC Patkice (COCI20_patkice) C++17
0 / 50
 309 ms 524292 KB 
#include <bits/stdc++.h>
using namespace std;

int n,m;
vector<string>v;
map<pair<int,int>,int>mp;

bool check(int x, int y) {
    if(x < 0 || x >= n || y < 0 || y >= m) return false;
    return true;
}

int dfs(int i, int j) {
    if(!check(i,j)) return -1;
    if(v[i][j] == 'x') return 0;
    if(v[i][j] == '.') return -1;
    if(mp.count({i,j})) return mp[{i,j}];

    if(v[i][j] == 'v') {
        int ans = dfs(i+1,j);
        if(ans != -1) {
            return mp[{i,j}] = 1 + ans;
        } else return mp[{i,j}] =-1;
    }
    else if(v[i][j] == '^') {
        int ans = dfs(i-1,j);
        if(ans != -1) {
            return mp[{i,j}] = 1 + ans;
        } else return mp[{i,j}] =-1;
    }
    else if(v[i][j] == '>') {
        int ans = dfs(i,j+1);
        if(ans != -1) {
            return mp[{i,j}] = 1 + ans;
        } else return mp[{i,j}] =-1;
    }
    else {
        int ans = dfs(i,j-1);
        if(ans != -1) {
            return mp[{i,j}] = 1 + ans;
        } else return mp[{i,j}] =-1;
    }
}

signed main() {
    cin>>n>>m;
    v.resize(n);
    for(auto &z : v) cin>>z;

    pair<int,int>s;
    for(int i = 0 ; i < n ; i++) {
        for(int j = 0 ; j < m ; j++) {
            if(v[i][j] == 'o') s.first=i,s.second=j;
        }
    }
    char win;
    int64_t best = INT_MAX, ans;

    ans=dfs(s.first,s.second+1);
    if(ans != -1 && ans < best) {
        win = 'E',best=ans;
    }

    ans=dfs(s.first-1,s.second);
    if(ans != -1 && ans < best) {
        win = 'N',best=ans;
    }

    ans=dfs(s.first+1,s.second);
    if(ans!=-1&&ans < best) {
        win = 'S',best=ans;
    }

    ans=dfs(s.first,s.second-1);
    if(ans != -1 && ans < best) {
        win = 'W',best=ans;
    }

    if(best < INT_MAX) cout << ":)\n" << win;
    else cout << ":(";
}

Subtask #1
0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Runtime error 309 ms 524292 KB Execution killed with signal 9
3 Halted 0 ms 0 KB -

Subtask #2
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Runtime error 292 ms 524292 KB Execution killed with signal 9
4 Halted 0 ms 0 KB -